How to impress any guy you like,

1. If you are a person who likes: Sports , games , superheroes, anime, food etc, half of your work is done. Start your long convo with him.

2. If you arnt into any of those, strike a convo about those categories and just let him talk and explain.

Point here is just before he talked alot gives him a idea that you are a fun person to talk to even if you said max 20 words .
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(And if your guy is into studies then ya maybe he loves physics more than girls at this moment so bye. Just study and wait for him.)

.... ya ya you're welcome....