You should go to Ramez or Rawnaq. These shops are really inexpensive and they get prints etc on a regular basis. Keep checking with them. Both shops are located on the road from the airport to Wakrah. Rawnaq will come first after the first traffic light and Ramez will be further after the next light.They also have a lot of stuff for your house like dishes, bowls etc etc.
Aisha-Taweela