well, that aside, your work is messy so thats something you should work on.
You say you dont care if its readable but graffiti is letters therefore its based on structure. if you want to draw shapes go somewhere else and dont call it graffiti but if you want to draw letters it would do you well to learn basic structure first and work on crazy shapes later. I have seen so many people that never went through the basics properly to start with and spend years stuck inside the same ugly shapes because they have no basis from which to progress.
Did you come here to learn or just to reject feedback? Im not beefing with you, im just not entirely sure what you want to hear.