AllStarGoalie01

You should never be nervous about making a transition to a higher level of play. Always take any chance you get because you might not get another shot at it and it may be something that 10-20 years down the road you regret!

As Arth said, always relish in the chance to move up. You will find that it gets easier the better the players are. You'll read plays better, you'll know where they want to shoot. It's sort of backwards thinking but it's true.

Goaltending has a certain amount of pressure and that's not going to go away whatever level of hockey you are playing.

I would suggest that you try and make it to recreational hockey/open hockey/stick-n-puck... whatever they call it when you play pick-up hockey... and players of various skill levels including adults show up. I sometimes see younger goalies get on the ice. They are able to handle the faster level of play or at least try to do their best. They make big saves and get burned too. It's all practice anyway.

The speed of the game always gets faster as you go up in levels. There are some kids at the junior level who are almost ready for NHL level of play. Zubrus started playing with the Flyers at 18 and was the youngest player in the Stanley Cup championship games. It's rare. You can prepare for that now.
Listen to your coach. Speed you can adjust to. (I assume) You moved up from pee-wee to squirt to bantam or JV and you adjusted to the faster level of play and puck speed. You will have no problem adjusting to varisty when the time comes. Hopefully, you will make it beyond high school and play in college or semi-pro hockey.
Good luck and have fun.

I've been in your shoes. I eventually went on to play college hockey. Fear of the next level was always on my mind but I never let it get to me. Just focus on the season at hand, improving your skills, and eventually your talent will shine.

If your rebounds are long it usually means your tense when the puck hits you. Despite what the equipment does you can shorten your rebounds by relaxing as the puck hits you. Try it. I don't know a goalie who doesn't close their eyes as the pucks hits them...reaction is natural. Another reaction is to tighten up the body in any position as it hits you. Just relax and absorb the puck into your equipment.
Let me know how that works.