Finally another Making update!
Okay, since last time, I smoothed out the clay a lot by sanding it. Didn't do it all at once, just kind of sanded it once in a while when I was bored, haha. (couldn't progress because of school)
Anyway, so once it was smoothed out, I applied some clear acrylic gloss/sealer.

It smelled kind of like spray paint, so you definitely wanna do this in a well-ventilated area. I gave it two coats just to be sure. This is to make it even smoother than sanding can accomplish, and lets the silicone come off easily.
Once that was all dry and ready (24 hours), I could apply the silicone!

For this I used Rebound 25. It's nice because you can pour it or brush it, and both parts are mixed in equal measures.
I made a test patch before covering the whole model, and the silicone cured just fine and was easily peeled off. So I applied four layers (took almost 5 hours!) and left it to cure.

Now it's all ready for the support shell, which I'll be doing later.