First setup attempt for my WD hitch. Maybe wrong

When I set up my WD, I didn't level the trailer as I knew the parking lot I was in wasn't level...I made sure the distance to the ground from frame was the same in front and back. Remember, all parking lots and driveways have slope built in to shed water. If you leveled your trailer on anything but a PERFECTLY level surface, that could be the reason for the skew. I learned this the hard way many years ago when I mounted a side tool box in the bed of my truck and it turned out looking like....!