Liking the bassline and the lush sounding pads.
The breakdown sounds really nice and spacious. The whole track has a really nice vibe!
If I were to nitpick, I'd say the percussion sounds a little bit dry and could use a bit of swing or groove to it.
Nice work overall though!
I remember a few years ago hearing some stuff about producing in 90s from old school producers. They said we didn't care about mastering and had very little mixing. We just made stuff and let audio engineers worry about it. But we don't live in the 90s, todays producers are expected to have next to perfect mixing and most of the mastering figured down, so that's another thing I am focusing in the last few moths.
Labels will have the track mixed and mastered for you, but the cost of that will potentially come out of your royalties.
I'd say getting your mix right is the more important out of the 2 as some labels will want a professional master of your track regardless of how good your own master is.
My two main thing to work on are chords and melodies. I read recently about minimalist producers. I don't think I want to go that way, but at my current level might suit me better until I find a better way to write melodies.
This could help you a fair bit. Some of the stuff earlier in the vid might be a little basic, but the latter part might help a lot.
It's based around major keys, but it works exactly the same for minor keys as well.
Once you understand the concept of the roman numeral system for chord structures, you can start looking at some common chord patterns. From there, once you get a feel for which chords are the most stable in a key (Usually the 'I' (or 'i') chord and how to move to a resolve, it becomes easy to start building your own.