im gonna teach you to render using paths i wont put any pics cause its so easy

1) open the pic you wana render
2) put a path around it
3) conect the last and first point by clicking the first point while holding ctrl
4) go to selection-from path
5) go to edit-cut
6) edit-paste as new
7) save the new image brough up as .png

i hope to see some of your renders soon