Deb
How long are icing sheets good after printing on them? I usually put them in a large ziplock bag.
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BB's Cakes
I have left over images on the 2" circles and used them 6 months later.  I keep them in one of the empty envelopes that you get the sheets in. Never have had a problem. 
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Sugar Mamma
I have also used them months later...as long as they stay protected they are usually fine.  

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Iqbal
I recently used 6months old printed sheet and the result was same as freshly printed sheet. just keep it in zip locked bag.
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