My advice for future artists, I recommend using photoshop for drawing. It works just fine.

Update: I found out my dad downloaded it from a sketchy website, which is why that happened. But if you want to use SAI or a SAI-esque program (like FireAlpaca),I won't stop you.

Mmm, I've seen people create some amazing things with Photoshop, but I think that, especially for someone like me who isn't great at computer art, it's a lot better just as a photo editor.