>>6145717Ooh boy. You better get in some practice first if you want your sculpt to match the look of that hyper-detailed SAS. In fact, it might be better to just commission a cloth jacket from a doll clothing maker if you're new to sculpting...
>>6145731Sculpt your positive, make a mold from it, paint the inside with Mr. Casttoner. The idea is the same as rotocasting pretty much--instead of filling the mold, you pour only a little in and then rotate and swish it around to coat the inside. This results in a thin, hollow "shell" that works just like the soft rubbery clothes on Figmas.