Hello again. I've been developing the addon I just mentioned above and I finished. I had a lot of struggles with blender addon structure and native methods such as modal, execute, poll, etc. but that's because I'm noob at programming and I also learned a lot. Here is how it looks like now:

Hi guys. I'm trying to do an addon that will show an specific brush in an animated gif tooltip. This is what I have so far

@mike w. (mikewazowski11) Could you post here the steps you did to solve your problem? I'm having the same issue but I can't find a solution