I’ve been working on a garage, may I get some feedback on the door? Possibly even some suggestions if you’re feeling kind. 
Looks good so far! I would suggest maybe adding some textures to the garage door, as they seem very plain. Other than that, good job
This looks more like a shed double door rather then a proper garage. You’ll see garages have square parts filling in the corner side and upwards you’ll need more depth in order to call this a garage it depends on what the build is for a store, house, car shop, ect?
The garage will most likely need some lighting source. A steel material and bolts if needed in the interior and support to keep the garage falling down I can imagine the garage is quite small it should have more width depending if your going for those too selections where one garage is larger then the other. I suggest looking at the actual houses or buildings they typically use these features and it’ll help you getting the overall strut properly correct.
Add handles square thin windows to help have that resemblance of a garage door. I can see what structure your going for but it’s need depth.
I appreciate that, I am honestly not the best builder out there, I really need to improve.