When i came to the Fretmentor's bluegrass class, over time i loosened up. It took a few rotations, but i'm pretty comfortable now. I don't even mind criticisms from the fretmentor, because i know he has a passion for this stuff, and if it doesn't sound right, or there is an obvious mistake in playing, he'll let you know.
What i enjoy about the bluegrass class is that there is such an eclectic group of musicians in there, and everyone is laid back and cool, and you can gain alot by playing with them with no pressure to really perform at a certain level. 2 years ago when i attended Fretmentor's guitar 1 class, i never anticipated (nor planned) to attend a class playing with others--i was happy to play in the closet. But i'm glad i stepped out of my comfort zone and did it. It's a blast, and i look forward to those Wednesdays.