Building a RV garage input needed. Pictures helpful

I had a shelter 41 feet long 32 feet wide and 19 feet high at center built a few years ago. It handles the bass boat, fiver, F 250 and a few other smaller items just fine. The contractor talked me into not closing it in so I could just drive thru. The contractor said if I was not happy he could easily come back and put in garage doors. It works fine just as it is. Of course I have a large attached garage on the house that I use as my shop so it depends on what you want to do out there as far as ends go.