Could I ask what you used to color this, also before or after baking? I've wanted to give these a try but I'm afraid I'll mess it up if I try to use markers.
I used colored sharpie to ink, and colored pencils to color before baking. I used crayola pencils which work great, but other people have had good outcomes with prismas as well. The big tip is to color AS HARD AS YOU CAN to get as much pigment on the plastic as possible so that the color bakes solid.
I know markers are recommended on completely opaque sheets of shrinky plastic, but with the semi-transparent shrinky plastic (like here), I wouldn't recommend coloring with marker unless you wanted a "stained glass" sort of see-through effect. Don't use copics on shrinky plastic though because the ink all sticks to your hand and not the plastic, ahaha.
I know markers are recommended on completely opaque sheets of shrinky plastic, but with the semi-transparent shrinky plastic (like here), I wouldn't recommend coloring with marker unless you wanted a "stained glass" sort of see-through effect. Don't use copics on shrinky plastic though because the ink all sticks to your hand and not the plastic, ahaha.
Hope that helps!
That helped a lot! Thank you very much!