What are these warmish feelings that make him want to keep doing this until he gets it right? Goals are supposed to be accomplished because the consequences of not meeting them are horrible.

"I'll get the timing right." It's more of a threat to himself than a promise to Han. Don't lock the elbows, don't tense, rock with the recoil, aim where the target will be and not where it is, don't fail at something as pedestrian as shooting a blaster. Stormtroopers can use blasters. He's better than a stormtrooper.

"Yes."