I kind of get the feeling neither of you has performed publicly before (if I'm wrong, ignore this post). When you perform publicly you're really hanging it out there, and some venues can be really painful if you're not confident and "on your game." I once witnessed a very talented guy who was so much "on top of it" in informal jam sessions that he was actually annoying crumble completely and very embarrasingly at an open mic! This guy was talented, knew the songs, and played and sang very well. The annoying part was that he did all this so well that he would "take over" songs that other people started at informal jam sessions. The first time he got on stage with a mic in his face he pretty much fell apart! It was really tempting to be cruel but those of us who knew him rose above it.
Better to get your feet wet in supportive venues - try to find a local uke club that has periodic open mic nights - failing that open mic nights in other venues can be a good start. If you're looking for an appreciative audience and to "pay it forward" to your community, contact local nursing homes - especially if you guys are doing "tradional" uke music from the last ukulele popularity wave!
Be advised that if you've never played (and sung, presumably one or both of you is singing) through a PA then hearing your voice coming back through the monitors can be incredibly distracting the first couple of times. It took me several tries before I learned (mostly
) not to chase my voice in the monitor.
John