Yo, YOKAI. If you use a ruler, stop using one! It helps on paper, but it won't do you any good once you actually paint. Like redeyed said, continue working on shit like the gradient 3D fill one. It's really clean, super fresh, and I can definitely see some room for letter progression.
Also, work on your handstyles. It seems like you force them too much. Don't do something swirvy, wavy, or anything like that. It should at least compliment the style of your pieces, burners, simples, etc. So basically, do something simpler until another handstyle comes to you.