Mega-Doodle Inspired has a fun new action out to create transparent stickers! You have the option of flat, puffy or super-puffy - and the effect is adjustable so that you can tailor it to your element. There are actions for PS and PSE. You can see them HERE.
I had fun testing this one - I can tell I'm going to be using it a lot! For now, I've made a puffy sticker alpha to match the rest of the Playful collection. And yes, there are more pieces to this collection in the works. I've been quite busy settling into the homeschool routine, but it should start to even out now.