Not having the other person around makes it hard to confirm any suspicions, but that's what jumping to conclusions is for. Popp nods to himself, convinced. Obviously Caspar and his friend Linhardt are into each other but Caspar is stupid. Unlike Popp, who would surely notice in a heartbeat if someone had a crush on him. It's pretty easy to notice a lack of anything on that front, though! Well. He's not absurdly good-looking and he doesn't have a mystical pedigree but he's got his own good points!

"I'm no genius inventor or anything, but it's not hard to pick some stuff up if you pay attention."

Does he frequently not pay attention? Well yes but that's not on trial here. He has acquired a certain amount of carpentry knowledge against his will and in self defense because the alternative is hitting his thumb with a hammer a lot.

"Now look, loop the flower stems around each other like this..."