I need to make a poster. The main image is a satelite photo of Ireland. On top of it there is a lot of randomly arranged text. Here's the hard bit: the text isn't any one colour - it lets an image of the union jack (the British flag) shine through it. How on earth can I achieve that effect???
ps. I'm new to The Gimp, but i may have done something like this on photoshop about 6 years ago (ie. i can't remember anything).