Drawing things like mine requires no skill whatsoever and doesn't even take that long (that one took me 1h20). You need to have basic anatomy skills or be able to copy a picture (I took a picture of a cat as a reference for that eevee) and know what looks cute. Generally speaking, round things look cuter than sharp ones. Add big eyes, small nose/muzzle and a :3 mouth and you get cute drawings with no effort.