For the driveway, you should replace the grass path with a stone block. Grass paths are fine for the other paths. I also think you need to do more landscaping work, the grass around the house feels plain. Something as simple as making it striped with another green block (I recommend green concrete powder) can make it seem a lot less empty.
Also, you should place upside down stairs under your overhangs on the ends of the roofs, so that it looks smooth and doesn't have a choppy look from the corners.