I think there could be some cool things down in the lower voices. Like psydyl said, some more bassline work might be cool. I think you explore some cool harmonies and ideas. Following this, I think something worth looking into would be expanding on ideas to create longer sections and develop musical ideas with those. Your work is very fragmented into a couple 8-bar sections and a few 16-bar ones at the end it looks like, so picking an idea and fleshing that out might be a good compositional exercise.
Going off of that, I think you have decent variety, but it'd be nice to see more variety explored. You use some cool doublings, but it sounds like they are all doubling 1:1. Harmonizing a melody line in thirds or fifths would be something to look at to add interest to those lines past the exact doublings.
Lastly and being totally honest, the burps were way off-putting to me. It's definitely an interesting choice. That being said, I do think you used them well in your work! The first one acted as a hard transition into new material, the second a bit softer of a transition, and then the last one was used as a 'statement piece' if you will - something the listener will certainly remember.