[woodcote]

The backdrops Brian describes are perfect. But if you want to print your own design, you should look at standard poster sizes. A0 is 33" x 47" - so not far off 4 x 3 foot. You could ask the printer to print two 3 x 2 ft images on one sheet and then cut them. Expect a price of £10-20 per A0 sheet, depending on the paper thickness used. You could even look at printing on PVC.