CaCh, don't worry, the bruise doesn't have to look perfect. You can just add in a picture of a bruise that you just crop out everything in the picture except for the bruise. Later, if you feel up to it, you could improve the bruise in a later update.
By the way, what time zone do you live in? I always have to wait at least a day for you to reply because I'm in a different time zone. I'm EST.