One thing you can hear across the 3 tracks is how much cleaner your production is sounding now.
The mixing in part 3 isn't half bad. The kick and bass sit well together and the pad sound is nice and holds everything together. The clap is a little loud though.
Some more organic sounding drum samples would really set this off sonically.
You still need to work on your chord progressions though. This would work if you were going for some sort of avantgarde ambient piece, but for this it sounds disjointed and doesn't really grab me at all.
You should definitely prioritise working on your chord progressions/melodies going forward.
You're getting there, mate!