I can't get the Exif so I don't know the lens or f stop you were using on these photos... more DOF would have helped and getting the camera parallel to the subject will also help in having all of it in focus. I'm no expert in the use of flash...I shoot 99.9 % in natural light, but there are several expert on this forum that may help you with that part of it.
Shooting these vertical would have also been nice to see. I usually shoot in both formats and several f stops if the subject will let me. Just something to think about while you're working a subject.
