Short, but poetic through and through. Nice imagery there. When I read it I imagined you were referring to your poetry. The "stroke of every key", every character you type on the keyboard. "electronic footprints" the words that form themselves across the screen. The "portrait" and the "canvas" are the poem itself, once complete, inspired by... well, whoever "you" is. It probably isn't an authentic assumption, but it's one I am content with. Good job.