They look nice but you are wasting a lot of space in between pens.I build 2- 12x12s at 5'10" apart,split them to 6x12 and then join them together,so for every 2 12x12s built you get 5 -6x12s.
The last pic is my new pen they are 8x16 and I have added 4 more of them since this pic so I have 9-8x16s and 15-6x12s.
In N.H.,Tony.
the panels on the ground are to go between the pens that are there- they connect all of them together....just had to do it this way due to the incline of the land