Not bad design, and the coloring is really solid! Your lines also look pretty steady as well, so that's an awesome place to start! I'd recommend doing some practice for anatomy/proportions to help you draw characters more realistically (since it looks like that's what you're trying to go for)!
I'd also highly recommend going through the photos you upload for art and rotating them so they're upright, and reuploading them that way. Also try to make sure your camera is parallel to the drawing so that you don't get a distorted image.
Edit: I think the photos programs on most phones have a means to rotate them. If not, it might be good to find a photo editing site that works on mobile. Photopea is one I've been recently acquainted with, but haven't tried it on a phone yet.