Yeah that first try is a bear which apparently you nailed. Now show us the pile of "test cuts".........it took me a pile of scrap to ever get the 1st acceptable joint settings. I was either too loose, too tight, or too shallow/deep. But once set I was golden as long as the wood was square and the same thickness. I gave up trying to do plywood drawers with dovetails as I always seemed to get splinters/tear out even with a backer board if I was using the Incra system. I'm reasonably sure I was using Baltic Birch but may have to try one more time to be sure......it's an old memory thing....or maybe just an old thing......can't remember.
I've used my Porter Cable jig for both through and half blind but have decided to keep it set for 3/4" half blind and set it aside. I now use my Incra Super Fence with the LS System to do all others including half blind. I have found for me it's easier to get the joint dialed in and I have the ability to do wider boards if necessary and a wider variety of designs.
Regardless, very nice results for your 1st. As others have said making the joint slightly proud allows you to flush them.