Wow, thanks!
That game looks really cool! Good job, man! Yeah, these can be used in beat em ups and vampire survival like games, even rpgs, so they're not totally limited to platformers.
Anyway, In the aseprite file, the vfx are separated in a different layer, you can set that to visible, and the other layers invisible, and export a new spritesheet with just the vfx. I haven't had the time to separate them into spritesheets manually but it is easy to do once you open the aseprite file. :)