Partial Specialization & Trade Pissing Me Off

I understand how to combine the 2 constraints to make one graph, but then trying to figure out the rest is frustrating and pissing me off. It's so much easier when they go the full specialization route for the trade :( Anyways if anybody has a clearer explanation let me know, and based on all the readings and the Unit Information Sheet I uploaded earlier, they're gonna want the Neo-Classical Economic models and trade and specialization based on the partial specialization parameters!!!!!! Oh well, perhaps I don't understand because I speak American not English LOL