Ok so for that haven't read my other thread, I got my braces off not too long ago. Currently I've been practicing what others have advised me to do but something is just bothering oh so much. When slurring a low C up to the C in the staff it feels fine but when i get to the D it feels as if my top lip has to overlap over the bottom lip a little to get it out. I followed this video:http://www.youtube.com/watch?v=Q17qIjoZ0-k I don't know if my top lip is supposed to overlap the bottom but according to the video its not supposed to. Also it doesn't feel right. I have an overbite if it helps.