With these I've been practicing and, let's face it, mucking about a bit with light effects and selective coloring. (For 02, 08 and 11-13, I used textures from erniemay here.) Even if you don't take any, if there's any particular icon that jumps out at you for one reason or another, let me know in the comments. I'm trying to hone my craft :)
01. 02. 03.
04. 05. 06.
07. 08. 10.
ETA: 4 more icons from the back half of the episode. Still no spoilers.