oh my god, now you make me want to give up art! haha! that's so cool!!! i've tried painting at similar dimensions, but somehow don't feel comfortable... you do it so easily. sigh. i guess i must practice 10000 more paintings to be like you!
haha, don't feel bad. big image size maybe can help the detailing, but when you work on a smaller canvas, you will pay more attention about whole painting. if you want getting more details to "safe" your work, i think it was not good things.