as a guy whos only skill in art is the fact that my pr in anatomically correct penis drawing is 18 seconds (not recorded), i feel like my advice is redundant, but a good way i think to start is to try other artstyles you dont do, again, im not an expert so i may be incredibley wrong
Finasty
If you want your art to be better
Take a look at another art that you want to improve
Examine it
Practice it for a few weeks/months
And try to put all that in your artstyle