as everyone else said dope idea but again could have been cleaner also i personally would have lowered the sun towards the bottom so maybe 1/4 or 1/2 wouldnt be visible
use masking next time.
buy an airbrush.
if you use a brush use, use a larger brush and more thinned paint in really large amounts and quickly and evenly do smooth coats.
also, prepping an area for red with a light grey helps it be opaque...
did you strip the oils and finish off the shoe with acetone??