Graf: As others have already said, read the New To Graffiti Thread, apply your studies to your sketches and get a concept of what is 'good', then post up what you think is acceptable. You might look into a name change too, lol.
Neet: Watch your bar widths and try to keep them proportionate to one another. Also, ditch the add-ons and extensions for now- let them come with practice rather than forcing them. Work on your flow a bit by incorporating similar letter characteristics though. I'd also avoid coloring and using fills for now considering that ink could be put to use on something once you've improved on your style.
Again, trying to work with these letters, but it's a tough combination lol. Crits plz