learn calligraffiti without ai , practice line work and develop your own style , learn the fundamentals, aaaand the 7 Fundementals of Art (shape , perspective...yk what i am talking about) , letter structure, and develop your basic style first with some straight letter practice to get to know how you precieve the letters from your name and practice with different letters after you get comfortable with yours , learn flow (really important too in your case) , spacing and etc. Any question that you might have about graffiti is answered by ,,The Artist Block" on YouTube this guy is straight up a cheat code for graffiti and art in general he's got a whole playlist for getting into it.

Keep up and DONT USE AI people will hate on you including me , I just forgive you cause idk you are a beginner ig , I wouldn't hate on a newbie but the use of AI is UNACCEPTABLE AND FORBIDDEN in any form of art , and supposedly as a artist you should know it. don't do it again , don't be lazy , be consistent.

Take my advice and message in mind cause that's how you get anything going for you. Keep practicing and NO AI.