Hi Paul,
that’s amazing. As I produced all Hookpad Sounds myself, it’s always great to see how others use them in a creative way and bring them to live.
I think your mixing is not bad, but at parts a bit inconsistent. Let me give you some tips:
For this kind of music I would start to have the drums on the same level through out the song. You can have of course parts with no drums or reduced drums, like only the snare or a clap sound on the backbeat. Try to think more black and white, more like full drums vs. no (reduced) drums.
After establishing a consistent drum level, find a bass level that fits to those drums and stick with it. Here I would also think in black and white. Use full bass, or for the parts with no drums, no bass.
Apart from the drums the melody should be your main focus. Make it as loud to stick out but not mask the drums. Tuck the harmony instruments behind the melody. The less volume your harmony instruments have the clearer the mix will sound. Find a good balance there between having a nice ambience and muddying up your mix.
Melody and harmony instruments should be a consistent package, too. If you have no melody, make the harmony a bit louder. When the melody comes in, make the harmony a bit quieter to create more space for the melody. If a second melody comes in, make the harmony and the first melody a bit quieter to avoid masking the drums.
Please forgive me for forcing a lots of tips onto you if you didn’t want any 
Dennis