First off...props to @Matt33!! Not everybody takes this step on their guitar journey. Personally I think playing in a group setting makes you a better player. I can be a nerve wracking experience and you are truly putting yourself out there. It gets better and easier. I participated in a similar program in a local music store. Making my way through that gave me the courage to join a couple of bands and get out and gig...that was 4 years ago. You may be at the start of an amazing journey . I hope you keeps us posted. I agree that when you feel it starting to come off the rails, it's good to have a way of refocusing and pulling it together. Looking at your bandmates may make it worse as they glare at you for messing up . (If that happens, time for new bandmates). Joking aside, I find looking up helps. I can remember very vivid situations where I was playing something tricky and I was starting to mess up. When this would happen, I would look up, sometimes I'd close my eyes. Inevitably, I would get things back on track. To the audience, I look like I'm just really getting into it...if they only knew LOL.