Change colours of things
Make thing black and white
Make photos black and white, except certain areas
Merge two images (eg, your horse, jumping a puissance wall, or something)
Just leave a specification of what you would like! Here are a couple of really basic stuff I do!
When you request, I will give you a link (without the tag at the bottom) and a picture(with the tag at the bottom) Just please please post your images in A LINK!