I have a job getting into mine too!!!!I made ours in the courner of our walled garden and used 2 painters tressles (I think) that were old and rotten, they made a brilliant frame after I cut the bits I did not need, then I attached wire all around, the stuff like yours, a nd put plastic corrigated roof, nailing one end firmly down with 3 sheets that lift off...at the time, we had a load of joiners and builders staying and also a friend, they all had thier rye smiles thinking it would fall apart in the next few days, well that was over 3 years ago, maybe even 4 and its still standing, its dry as its sheltered and the high winds have NOT blown off the roof!!!! I had some hubbards in ours for last year, I also connect out chicken hut, the same size as yours, to the end!!!!!!