Looks pretty good, but some velcro straps and clean up those cables at the back. Remember to check that your pc has enough airflow with it being on the floor. Maybe in the future get a bigger desk so you can put your pc on it. Good start though
Erm. Well my experience id get a little bit bigger desk and BUILD A DESK. Not that hard to do just afford it. Get another identical monitor if it supports hdmi idk what model those are. Add sound proof pads around your computer.