Cool, good on you for giving it a go (your singing isn't the best in the world, but it's not that bad).

I've never written a song for a ukulele. I bought one just to play "I'm Yours" and "Hey Soul Sister", now its in a box collecting dust. But the uke does have its charm.
Thank you, and I agree about the uke...it's a fun little instrument to play around with!