That middle section is really nice, I like that arpeggiator. I think because you're not trying to play something as complex, it let you get more in the flow with it.
One of the reasons I love my lyres is that they allow me to improvise in a more controlled manner, where I'm not having to search for things - they let me narrow down what I'm doing.
So... one thing I'm going to challenge you to do is improvise to a metronome (or perfect beat track). Even if you play with a lot of dynamics, a metronome is one of the best ways to get more control over those dynamics. There are sections in your improvisations where it sounds like you're slightly searching for the notes. But, what you do well with this is that you do just keep going and are generally landing it fairly well, especially considering the complexity of the improv.
Anyways... part of my process is that I do a lot of improvising, and then I record snippets from those improvisations that I really like (i.e. even on my phone or humming) and then I take time to more carefully develop them, playing them.
I also layer my tracks and improvise off of what I've already put down, but each track is simpler so it allows me to be more dynamic in what I put down as well. Because I have to play to myself, I also then have to get better at timing/rhythm and being in a consistent flow.
I would also echo comments that it's not quite hitting the theme, but that with the right sounds, you could do it. On a more philosophical note, I find that a lot of this stuff revolves around harmonizing what is your style with the image in question.
So, my thoughts on a process for you:
1. Do a lot of improv.
2. Pick the best parts of your improv that hit the theme the best.
3. Build off of those sounds you like the best in your DAW.
But overall, this is great work, and you're definitely improving, and I really love seeing you show up to each jam with something new.