I need to apply an edible image on the front of a cake that will be tall enough to cover the two tiers. Can I stack my tiers so that they are flush in the front? will that be to heavy for the front of the cake?
I may not be quite understanding the question, but if you support the tiers appropriately with dowels or SPS I don't see a problem. Edible images really do not add much weight
I just worried about stacking the 2nd tier towards the front of the cake and not in the middle as they are usually stacked. I need the edible image to cover both cakes so that it doesn't bend.
As said above, just dowel the cake correctly and it will be fine. If you google "offset stacked cake" you will see photos of cakes where this is done, just that usually the stack goes off to one side or towards the back, but the same principle applies in your case where the stack comes towards the front.