Well you're doing very well... It's a good drawing.
I don't know who or what this is for so just take this as you need it; One thing I've begun to add to most of my plans is 3D shots. Either in black and white or color. For instance, the bathroom elevation at the bottom could be moved over and a 3D shot could be placed there of the interior. Perhaps from the entry looking in. It adds some punch to the drawing.