I echo the sentiments above, particularly about diction (though not about the shirt). Don't take it too personally though Matthew as it seems to a trait endemic among younger singers these days that they don't feel the need to sing their lyrics clearly. In the pop and rock world perhaps this is less important but if you are interested in the world of of folk music you must understand that communication is everything. When you sing your song imagine your are telling a story, try to capture and maintain the interest of your audience.