I suggest not to try and occupy blank spaces with chibis/characters. It looks messy IMO. Try to keep the design simple and pleasing to the eyes. Also, buttons give the patcher/website a lot of glamour but yeah, keep it up. Practice makes perfect. Looking forward to your future designs
I'm not implying that I'm better tho. Just giving you some suggestions
Here's some of my latest patcher designs.
PS: Daifu-chan is the best