I didn’t take the time (yet) to review the entire model, but two things jump out at me right away:
You’ve scattered your raw geometry across several different layers. That’s extremely poor practice, and the problems it creates are more than theoretical. Expect strange manifestations. Read this: Does SketchUp support layers?
You have positioned your dimensions really oddly. They should be aligned with adjacent dimensions, and they should be placed neither unnecessarily far away from the geometry they describe nor right on top of it (you have done both).
Why is the whole row of dimensions across the bottom placed right in front of the foundation? They could easily be moved down below the foundation, making both more legible.
Are you looking for strokes or in learning the ins and outs of SketchUp? If the latter, you should put yourself through an intensive self-training program using the tutorial videos and written materials linked to the Help menu.
It may be unrealistic to expect very much useful, in-depth critical feedback on a Help forum obtained just by dumping a whole model with a casual “Whadya think?” We do much better here when you ask a specific question that can be answered in a paragraph or two. Please don’t make us work too hard figuring out the question or the extra effort might come off the response.