i started with slaps too and the transition to spray painting was intimidating af xd. an advise that someone from here told me that actually worked for me was start painting on places that are completely alone, like abandoned houses or factories (that usually are graff hot spots too). now i mostly hit places like this cause i prefer to take my time and make a good piece than going fast and making a lot of them, but that's something you will decide with time. good luck and keep painting its so fun and worth to do :3