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Looking for a little help on this print. I printed the solid top and it came out fine except the flower won't open. I think it is fused at the bottom which is causing the issue. I am trying to use an Exact-o knife to cut through and free up the joints.

In the attached image (bottom of the flower) I have been opening up the spaces indicated by the black lines. Is that correct? DO I also need to fix the spaces indicated by the green lines. Any other ideas to get this to open?https://www.dropbox.com/s/bh6553zvwv34unx/IMG_1162B.jpg?dl=0

Thank for the excellent design and thanks in advance for helping me out.