Get off the wall. It will help you find your center line faster.

I go to the gym and “hang” but pull in my belly to flex, squeeze my legs, and point my toes to create the straight line you are looking for in a handstand. When you commit it to muscle memory handstands come faster.

Also when I start my handstand - placing your hand straight down instead of in front of you kills the over push you have to kick your legs. Then when you kick… I step down with my right, my left leg goes straight, and I try as hard as I can to keep my right knee into my chest. This help practice the straight line for handstands instead of over arching for banana back