I just saw this post ..... a few tips which may help next time - some of mine had slight tears in corners as well, but upon assembly of the flower it was not noticeable...
possibly the gumpaste was left to dry for too long thus making it difficult to cut through cleanly - too soft/wet and it can stick, too dry/firm and it can crack
make sure the cutters are wiped with a lightly damp cloth in between ever few cuts to ensure a clean cut - crusty edges will make it difficult to cut cleanly
make sure you cut straight down, not angled, and wiggle a bit (like scratching a lotto ticket motion) directly on counter/surface to ensure piece is cut free
the thinner the gumpaste, the easier it will be to cut cleanly
I see someone suggested, which I would have as well, to flip over and cut with pattern side down - that may work better for some
make sure your edible images, no matter what brand, are nice and flexible prior to use and stored properly so they dont dry out and crack
Hope that helps = feel free to message me if you have any further questions and please post pics of your completed project - would love to see!