First of all this might be hard to explain but I hope you can understand.
I have an image with letters on it and a background. The background is blue and its on a special piece of paper.
What I want to do:
With this image I want to remove some letters/words by putting the image in my printer and printing the same color blue as the background.
But I need it exactly were a couple of words are.
Than I want to put it back into my printer than put different words exactly were the old words were.
I dont understand how to get everything exact.
Can you please help me? Please let me know if you don't understand what im saying.