I need to move into a shed

Hi im 76 and veteran and i just signed the papers to make my caretaker into my wife. I have lived the same way for the last 50 years always on my self same leather couch where i do ev. ry. Thing. And always someone just cleans up the mess and brings me my food and medicine. For the last 5 years that has been my wife, but she just told me i cant call her that. Then with my charming ways and im so good at opening ip to her when she wants to change me or chooses to for her job, i got her to agree to make me have to sign a paper that lets her stay here and i can call her my wife. Now she says she is the boss of the home, and i have to build a shed to move my leather couch into. She said i should be exicted be cause i can squat in any kind of "nasty" way i want when i do my business in there because it is her house now, but it is my shed. How do i build a shed. I got a bunch of timber and steel and cutting tools from an old associate. Ok please help me for my service and "please thank you" as my wife always says (please help).