Eire,
I play the Willy Tell & have won contests with it. I use mixolydian (DAD) & play the melody on the middle string (mostly). Being a Music major, I play it quite stylistically as it would be performed by an orchestra--all the usual emphasis: dynamics, pauses, slight changes in tempo, etc. which is often not found in the average folk Music style, but is appreciated by judges. Good Luck!