1. A computer-implemented method of creating a shape collage, the method comprising: receiving a shape specification signal which specifies at least one desired shape, each desired shape having at least one shape boundary and an area; receiving image data which represents a plurality of images; and processing the signal and the data to obtain a shape collage of the images which at least partially covers and conforms to the area of the at least one desired shape so that the collage resembles the at least one desired shape and so that the images do not substantially extend beyond the at least one shape boundary, wherein the step of processing includes the steps of: evaluating whether each image is to be treated as being either within or without the area and removing or hiding any image that is evaluated as being outside the area.