I think they're very cute! I love how long the legs are. If you have a mouse, honestly drawing with the curve tool in paint is just as fun and is a nice introduction to get used with some digital art tools, even if ms paint in general is considered "lesser art" for some reason.
If you want to develop your own style, I suggest looking at pictures of actual ponies/horses and going from there. It makes me draw my ponies with a rounder snout rather than a small G4 one.
Nice! Crosses is so cute, a custom would be awesome! Twilight is very pretty too, love how your style is coming. Nice job :DThank you! I found a bait G2 pony on eBay so I might buy her and turn her into Crosses, I've never made a custom so it'll be a fun challenge!
Great work! I really like your own style that you're developing! :) I also love Pineapple Fritters' design, her hair styled to look like a pineapple leaf is a nice touch!