Hi there,
this is my first post here ( I read about this forum at sitepoint ).
I created an image that contain the design of an old stamp.
I call this image as the base cliche'.
I will have about 400 stamps where each stamp is different from each other because every stamp has one or more flaws ( defects ) in the design that let me to distinguish it.
I was thinking to use for each stamp two layers.
The first layer contains the base cliche.
The second layer contains the flaw drawed by me by hand.
So I will have about 400 images containing two layers.
The first layer is common to all images.
My problem is that if I will have to make a little modification to the base cliche' I will have to import it to all 400 images.
I'm asking if it's possible to avoid that.
Another solution could be to use the first layer as the base cliche,
while the second layer contains flaws of stamp 1,
the third layer contains flaws of stamp 2,
etc.
The main problem with this approach it that I will have to save manually an image with
stamp1 layer1 - layer 2
stamp2 layer1 - layer 3
....
stamp400 layer1 - layer 401
Helps/advices/suggestions are welcomed! 
I hope I was clear,
thanks in advance.
pippo
