Recycled field shelter

I have made either a brave or stupid decision. I am going to create my own field shelter made out of recycled materials. The idea has been in my head for a few months now. A project I would love to do and achieve. If I don’t attempt I will always wonder if I could! 

I designed it today. Reason is I have s space side of polytunnel that’s going to be sheep folding pen. Looking at feet etc. I want a field shelter at side to my bespoke size and use That would cost a fortune for someone else to build so going to do it myself on a budget!