You should be looking for a pattern maker. "Pattern maker" is an archaic job title to describe a product design engineer in the apparel industry.
Tailors will certainly be more accessible but keep in mind that they largely do MTM or made to measure for individual clients. To manufacture, your patterns must withstand a higher barre that comply with production standards and tailors rarely have this sort of experience.
In the apparel industry, designers provide another sort of function. Largely project managers, they often take pattern making in school but the two careers are divergent -and rarely the twain shall meet.
You might consider visiting Fashion-Incubator.com (my site). It is the most popular technical site in the apparel industry with over 2,000 in depth entries on every aspect you could imagine about starting, launching and running a clothing line. I've been a pattern maker for nearly 3 decades.
What kinds of products are you representing? If it`s apparel or sewn products, my site will be very useful. Some tips applicable to many industries may be gleaned from this:
Whithin the last 18 months, the Supreme Court ruled that manufacturers are vis-a vis entitled to reinforce their price points with vendors. It was based on a Texas case where a store was discounting some hand bags. Their vendor didn`t like it so they refused to sell to the store anymore. The store sued in retaliation. If I recall, part of the Supreme Court argument rested on the concept of an entity`s right to do business with those they choose to. Unless you are a utility (a monopoly) a business cannot be compelled to sell to anyone and the reasons they may choose to refuse are nobody`s business (unless it`s discrimination based on sex, race, religion etc). This is the right of refusal extended on a grand scale, better known as "no shirt, no service".
Another reason a company can refuse to sell to a store is based on territory. Part of a company`s value (assets) is based on relationships ("good will") with key partners. For example, part of Mc Donald`s value is territory. Why would you buy a franchise from them if they would permit another person to buy a franchise and set up shop one block from you? These are complex arrangements that are governed in part by population density. For example, in my small town, Mc Donald`s may stipulate franchises are located X miles apart. In a place like NY or LA, it may be a matter of 6 blocks.
Other businesses reinforce their price points by owning all of their outlets (the Mac Store). Again, Apple is not required to wholesale their products to anyone.
Fwiw, there are reasons beyond the obvious as to why a manufacturer would want their price points enforced. For example, I wrote a book that contains genuine trade secrets (governing practices) that are not intended to be broadly available. The way these are kept from broad dissemination is through price points. If it`s cheap (can be discounted), then the information becomes widely available. If it`s more expensive, fewer people will buy it, only the most serious people will, those to whom the book is intended.
This practice is very common in the realm of proprietary information that is sold. Usually available by subscription, prices can run from several hundred to several thousand dollars.
It`s also a double edged sword as many manufacturers (newbies, assuredly) discover. In exchange for these exclusive agreements, a manufacturer cannot discount their products and undercut their retailers. For example, if I want to get rid of some excess inventory, I MUST notify my retailers first that they can discount the product and I will issue them a credit or refund to cover it. It is only then that I can sell consumer direct at the sale price. If I don`t do this, I run the risk of losing my wholesale customers because they are not required to buy from me, anymore than I am required to sell to them. They only possible exception is aging inventory, like last season`s old styles (fashion for example). Still, if a manufacturer has inventory on hand, they are best served by offering the deal to their retailers first. If the retailers don`t want to buy it, then the manufacturer can sell consumer direct at a discount. That is not to say a retailer will be happy about it because it dilutes the value of the brand if consumers know they only have to wait a season to buy goods at discount. It`s a very delicate balance.
If you live in Tampa, check the listings in Miami, there`s tons of operations around there. More importantly tho, you need to be prepared for that step. Usually, you find a cut and sew place from your pattern maker. Then, you need to know how to interview and select a contractor. Otherwise, you can lose a lot of money. See my site for more, it`s the "start up nation" for apparel manufacturers. http://fashion-incubator.com
I don`t know about any industry except sewn products so I would have to say this varies. In apparel, if you`re a new or start up line, the commission is between 10%-15%. The most typical rate is @ 12%+. Once your line is proven (meaning it sells itself and stores consistently reorder), it might go down to 10%.
If you are a larger firm (10-20 million in sales) the commission may go down to 8%. Again, I can`t speak to other industries but in apparel, once you exceed 20 million or so, it`s more typical you hire an increasing number of sales reps as full time employees rather than relying strictly on independents. If these are employees rather than independent reps, obviously you pay salary, expenses and a much smaller rate of commission, usually 2%-3%. This also applies if you have a sales manager employee. If you use only independents but have an employee sales manager, they get salary plus a percentage of the take that the other reps bring in.
Lastly, obviously our sales orders are smaller than an airplane. If someone is "lucky" (or unfortunate) enough to score a large department store account that buys a whole lot of stuff, it is more typical that the store goes through the company directly usually via what`s sometimes called a buying office (long story). This becomes what we call a "house account" meaning the manufacturer services the account directly so no sales rep that gets a commission.