Ask for a black and white "engineering blueprint" of your photo from Staples/Office Depot and your B pictures can be printed in large scale for around $5! mount on insulation board or decoupage onto canvas
Photo Canvas: This is the best tutorial I've yet found for that whole DIY photo canvas that people are into doing. So easy to follow, and encouraging. Takes just minutes. Imagine the gifts you can make for family and friends! Gotta try this!