Hey Groovy, seeing that our mentor has a busy schedule right now looks like were going to have to pick up the slack, hopefully we learned enough to walk on our own two feet.
I took a look at your map and almost everything looks good to me. One way you could fix the boundaries between 1, 3, and 7 is to extend the divergent boundary between plates 23 and 3 down to plate 6 cutting in half plate 7. leave the right side as plate seven basically the way it now and on the left side extend plate 1 and 23 down to plate 6.
Also don't be afraid to break up plate five if you need to it is huge and it will also give you some space if you need it.
One other thing, this is what I do to get the east and west sides to line up. I take my origianl image and add two inches. I then copy the right (or left) side and paste it to the opposite side. I then change the lines and make general adjustments to make sure they line up. I noticed this might be of use to you do get the boundaries of the polar plates 14 and 15 to line up with each other, cuz right now they don't. It will also most likely mean that your boundaries near the boarders are going to change a little.
I did a paint over to give you an idea of what you could possibly do.
Best of luck