When it comes to picture editing what I am capable of doing are only changing the contrast of the picture and cropping it. An expert can do a lot more to the picture to make it nicer.
I had this picture which I took at Nakuru National park of a nice little bird. I was showing it to Lewis who is a graphics Guru and this is what he did in 5 minutes! btw He nick named it the Angry Bird ( nothing to do with the application )