I am trying to describe how my protagonist reacts to congratulations from a friend about a genuinely significant career achievement. My protagonist is modest and self-deprecating by nature, and I am looking for a 'playful' expression that accepts the congratulation in a way that would be believable and appropriate for two people that have known each other for many years, who both share similar values, and who both have a good sense of humor. I am thinking of something akin to a shrug, or a slight opening of the arms, paired perhaps with a slight raising of the eyebrows to signify communication of mock surprise or disbelief. When I try to write this, however, I am getting caught up in minutiae about how to describe the body movements and expressions. For example, here are three descriptions I've come up with so far (I warn you, they're not good!):
THE CONGRATULATION FROM A FRIEND
“You’re in the team, aren’t you?” Neil asked. “You’re bloody in!”
THE PROTAGONIST'S REACTION (ONE VERSION)
Billy spread his arms and raised his eyebrows in mock surprise.
THE PROTAGONIST'S REACTION (ANOTHER VERSION)
Billy shrugged his shoulders, playfully raising his eyebrows in mock surprise.
THE PROTAGONIST'S REACTION (YET ANOTHER VERSION)
Billy playfully shrugged an expression of mock surprise at his friend.
Help! Any suggestions and/or input much appreciated! Thank you.