nice one OP,
keep on going, graffiti takes a lot of small steps until letters start to look really good.
everyday scribbling and doing stencils helped me a lot at getting better and learning the methods to create spatial depth.
unfortunately i haven't sprayed in years, i stopped after a costly trial.
what i learned: never drink and spray. And change your signature at least twice a year. (depends on how many jobs you do)