Exactly, what Lugia says. If you already have a good baggage of music you listened to, then just let happen what happens on the modular. And listen back. I've been in this sort of feedback loop for half a year or so and people tell me I'm improving, which heavily strokes my ego, and that's much better than Facebook likes. But the main point is this - have fun, listen critically while you're doing it, see if you can tweak things here and there to make it cooler/nicer for yourself, and then listen back to it the days after. You'll find you'll get better at getting a result you like afterwards as well. Not always what you expected, but that's part of the game. And did I say - have fun?
BTW - I liked that jam! If you have something USB equipped like an iPad or a computer, getting a simple audio interface will help the recording quality a lot.