I suggest that quantify the finance activities that you oversee in your resume - i.e.; managed organization budget of $XXXXX. If you made any improvements to the way finances are handled, consider that as well.
Leading and mentoring other members is also great experience.
Playing the guitar? Leave that out. Not relevant to your future career, unless you plan to be a rock star
I hope this is helpful. If I can help further, let me know!
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