Downside of a custom brush XD (Patreon)

sure when using my custom brush, i can use it fluidly but when it comes to coloring it in, that's when the nightmare begins XD.

for most instances, when im not using my custom brush, i could just paintbucket my colors in with ease. but since there are "holes and scattering in my custom brush its harder to patch them. So i just paint em in manually XD.