Mysterious Stranger wrote:
For just practicing? Sculpey. You can get a small block from Michael's for a few bucks and it comes in lots of different colors. You have to either bake it to get it to harden so I wouldn't recommend using it on anything plastic. You can try boiling it in boiling water and that works somewhat but I've had mixed results doing that. But for an inexpensive beginner material Sculpey is your best bet.
For sculpting on to something you'll want an air hardening material like Green Stuff or Fixit Sculpt.
I agree with all of this. However, i will say compared to sculpting with Sculpey, using Greenstuff is like using chewed bubble gum. Just very different. Keep your tools wet. Amazon is the cheapest way to go if you decide you want to give Greenstuff a try.
https://www.amazon.com/Kneadatite-Yello ... kneadatiteSome other tips,
Only use your tools for sculpting, but luckily anything from a toothpick to plastic spoon can be a sculpting tool.
Start with less than you think you'll need. Once you start removing the excess, you'll realize you have too much. Not a big deal with the $8 block of Sculpey, but the $30 jars of Fixit you tend to be more conservative.
Oh, and Bill Merklein, the freelance sculptor Hasbro used for the RAH era, has a series of videos on sculpting on youtube. Some of it may apply, some of it may not because of scale, and it won't all of sudden make you an artist, but it does offer some pretty good incite from a pro.
https://www.youtube.com/watch?v=5NLBd3RtvZ0