I've just made a useful tools for Pyxel Edit:
Pyxel Edit: 3D ViewerWith this tools, you're allowed to see your 2D sprites as fake 3D sprites. And it's work all complety live. So you work something on pyxel edit, save it and the viewer show your updated sprites. :) And this tools was made by Game Maker: Studio
More informations and features are on itch.io sites!
And @dev I hope the name is okay. Otherwise I can change it again. I just want to be sure. :)