Cody, running a business is a HUGE job and responsibility and you need the maturity to do this. It is not just something to play around with if you don't have the abilities (which goes way way beyond knowing how to work with silicone). It is also requires capital. This means you must be able to fund your supplies and do so on comfortably. Silicone, I don't have to tell you, is highly expensive stuff and the equipment is, if anything, more expensive.
This is a much more expensive career type thing than say making dog biscuits or caramels in your kitchen; making t-shirts; or any of the handful of other things guys probably do to fund top surgery or business folks start in their homes every day.
Silicone itself, from my understanding, as I know a guy probably 4 X s your age who does not yet feel he can start a business due to his lacking capital, is *very* fiddly stuff. He has made a handful to people he knows. He says you that basically a hundred things can go wrong to screw things up and not much is on your side with it. He often has to start over tons of times. He probably has 1000 hrs and thousands of dollars invested.
I'm not experienced enough to speak about the problems you have in your products. Suffice it to say that if you don't have those kinds of hours and dollars, I don't think you are serious at all. Might be a fun hobby to make your friends and all...
Your turn around time, imo, is not the issue. Lying about it is. Reel Magik knows that the turn around time does NOT keep people from buying their stuff. If they say it takes 6 months, people will wait 6 months, as they know that they will deliver. It's lying about your turn around time. If you say 6 months and it takes you 8, no one will believe you. TBH, I don't think you could get away with 6 months, you're not RM, but the point still stands.
As it is you should have a (bad) record with a handful of people you wouldn't want to have a bad record with. For instance a 20+ line thread here and complaints with Paypal. I'm surprised it isn't the post office (for which you can get federal charges) and the Federal Trade Comm.
As the late CEO of Apple Computer once said "Real artists deliver" and so do real business men. Get it together, it isn't too late already (which it may be).