I am doing a plan (pro bono) for Habitat for Humanity so pleading that someone help out of respect for a great cause! I'm an Interior Designer and don't do buildings so having a difficult time with this roof. I've included a sketch and done the create roof in AEC following the online video but don't get a simple shed roof in any way, shape or form. And do not know how to make exterior walls of differing heights with rounded edges, resembling adobe construction?