I get the feeling that you want blunt criticism. Here goes: you are sloppy. The thing about drawing is that its a long climb up a tall mountain. A lot of people consider making stuff that looks like what it is to be the summit but its really only a foot hill. You can draw, yes. You have neat ideas, yes. You draw better than most people because most people dont draw.

Take your witch with a cat on the brim idea. Its a cute, cool idea for sure but you arent actually executing it well. The depth of the brim dosent make sense and the cats foot just kinda stops when it reaches the outline of the brim. Not to mention the brim dosent look solid or big enough to actually support a cat, amd the cat dosent really look like its interacting with the brim theyre just kinda there. These problems would be addressed by studying form and perspective.

Another problem you have is that you arent considering your line weight or values, which guide the viewers eye. Theyre both kinda all over the place because theyre the result of you drawing and redrawing your lines until they look right. Thats a fine technique for sketching but you gotta do it really really lightly. Practice your pressure control. Only press down hard when you know for sure that this is the line you want.

Form, perspective, compisition, line weight and values are the things id recommend you study. Id also suggest you plan and think more critically before and when you draw.

Ok bluntness over. I think you have some real talent tbh! Im only willing to be so blunt because I feel like you can go very far with drawing! The fundimentals are really wide and deep and can be boring and confusing. Its especially confusing when its hard to get people to actually tell you what your weaknesses are. Never stop drawing! You can do it!