why not?!

with the technique you do still life, you can draw/paint something much different !!!  : )

if your right hand does not listen to your heart, use your left hand.  
if you are used to brush, you can try rock/bamboo stick . . . . 

to me, the most important, it's if you have in your heart something that you really want to express . . .   not driven by skill, by money, by fame, by any rules (peer pressures . . . ) and etc. . . .

be patient . . . and then do it. :)