Re: The clothes (lying/laid) on
"Laid" suggests deliberate placement. Most people don't "lay" their clothes on the floor in some sort of arrangement.
I confess that I drop my clothes on the floor instead of placing them in the hamper. Once dropped (or even tossed) on the floor, they lie there until I gather them up.
Unless you want to suggest the careful, deliberate placement of the garments, use "lying."
note: clothes are not is
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.