I like the composition and the color schemes. I dont do these so my feedback probably isnt too helpful, but try making them not square. Play with opacity and the dimensions

And try adding more stuff in focus.
Good focal points but I feel like there isnt much going on to look at. This is debatable. There are plenty of abstract shapes, but they dont exactly form a scene in my mind, you know?
Could use some more highlights (bright stoof).
Always love speed art! Keep it up
Edit: Try adjusting the overall contrast as well

Darks should be dark and lights should be light. Try avoid greys (some of the shapes behind her are fairly washed out)