DIY high hopes

This is my dream gazebo. The ones you generally see are all prefab and waaay lattice worky and, well, I don't hate 'em but I find them blah and mediocre.
THIS is (ideally) what I'd like to construct at the parental casa (idyllic lake view not included). Although , for yours truly, even a 'zebo of the latticey mediocre variety would be an ambitious undertaking ...