Waste fittings on the horizontal need to be wyes and not tees.
I don't care for the rubber fitting. Many of those over them will crimp on themselves, or allow the pipes to shift.
The p-trap for the washer can't be below the floor.
It needs to be on the same floor as the washer, with at least a 18" standpipe.
The vent needs to be within five feet of the trap, and between the wye.
Every fixture should have a vent, which helps to prevent the traps from siphoning.