Office Chair

I was looking for a free model of a simple computer/office chair yesterday. To my surprise, I found that there were few out there that look like a modern chair that I could go out and buy at an office supply store today. The few that were available were on other websites and needed to be purchased. I decided to just design my own. This is an original design and therefore reference imagery from other products were not used when designing the model. Important dimensions like seating positions were measured from my current office chair to ensure the scale would be correct as this model is being used in a larger dimensionally accurate model of a bedroom/house. This is the first model I've done that I've posted online. I was only able to spend a bit of time making it as this is one of many models in the works for my project. Any feedback is appreciated, Thanks!

I've attached 3 filetypes that are hopefully sufficient for most use cases.
Filetypes:
STL
OBJ
STEP