im tryin to write out poderoso for a tattoo for myself and it just aint comin out at all. it has to be perfect or im not goin to get it done haha
I feel ya man...work can be a son of a biotch...just like writers block

but don't worry eventually there will be new ideas poppin up and usually they are better then before the block, almost like youre brain continious sketchin while youre hands stop.
Asfar as the tattoo go's, me personally I would wait for like 2 to 3 years before sketchin tattoos. People have asked me for tats every now and then but I still don't feel that I'm ready for that...but offcourse the choice is up to you, but I'm reasonably shure you will be glad if you wait with the tat cause you are progressin nicely and I now the diff between my work from 2 years ago and the work I'm makin now and there is a big difference and I'm shure that will be the same for youre work.
peace homie