Not the absolute best morph I have ever seen, but FAR FAR from the worst.
If you really want tips, that may be a little tough, as you did nothing wrong really.
The pulsing back and forth from one color to the other was a bid odd, as the usual starts off as fleshy and slowly fades to blue. Also if you are looking to follow the standard, it most often starts off small and gets big, not somewhat big to bigger. For all I know though, you may wanted these to be this way exactly, and if that's the case, GOOD JOB!
I guess the only real advise I could give is, if you can keep that same quality and make longer vids with bigger inflation, you will be golden.