Definitely helps to have some directions I used free ones from Justin Rhodes.
We have 3 like this, the first one we ripped 2x4 in half, the other 2 we uses 2x2's which are lighter and easier to move, just predrilled all the holes or the wood will crack. Also didn't make those doors on the back, we just lift the lid and prop it open to get the eggs
https://abundantpermaculture.com/chicken-tractor-diy/