Be forewarned if you use PanPastels on black polymer clay. I used black clay and masked off the crow silhouette with frisket film cut on my Cricut.  Then I did an overall layer of olive green pastel.  Over that I used a silkscreen with pastel to make the light green palm leaves.  The colors looked like this before and after baking.

Before and after baking PanPastels on black clay

Then I decided I needed to seal it with Translucent Liquid Sculpey because the leaves had no raw clay to stick to and they seemed fragile and ready to smear, plus I wanted to cover up the adhesive left by the frisket film.  

I was surprised to see how the pastels practically disappeared into the black.  If you look at the round black shape in the photo below, you can barely see the design.  I sealed the three smaller pieces on the right at the same time.  They’re on white clay and they’re fine. I recall having something similar happen with pastels on black paper that I sealed with spray fix. Don’t make the same mistake I did!

After sealing PanPastels on black and white polymer clay with Translucent Liquid Sculpey