I want to have a optitex runaway designer free

Hello techyv.com!
My business is female fashion clothing, I was also the one making the design. But it is a pain that when I've finished a design, I still need to sew it before I could tell that it is really good when worn by a real model. So I was to by my friend that I should be designing by the use of optitex. Please teach me how to download an optitex runaway 3d designer free. Thanks!
