looking pretty good man.
but it looks like you port is a bit off,it looks like it get narrower inside the box.
when i build ported boxes i cut a few stips of mdf the thickness of the port,and when im building i can place them in the port to make sure the spaceing stays exaclty the same width down the enire length of the port
why did you not round the port edge inside the box where the port ends?and other than the wood being split from screws in one or 2 spots it looks good,you are very much on the right track