Now you create new layers on the right side and paint sth in it, for instance a new gun (at the same position), then u set the template layer as invisible and export the file as png. then u can use it ingame (you habe to draw everything to really use it, but u could also take assets from other people and copy paste them where u want them to be)
22:40
hard to explain, maybe just watch a tutorial on how to use krita for basic drawing and editing, and maybe one on how to do pixelart in krita, u can alo define a help grid, but i'd habe to look that up aswell
22:42
in the end u want a new image like this
22:43
22:44
(i took a nice game.png from
somewhere, but replaced the cursor for all weapons to be the same) "Just" do some image editing if u want sth custom, or actually get into digital art if u want to paint sth cool urself, gl hf