Any advice for having more consistent performances?

I only started improv about a year ago and am about to graduate from from the final class at my local comedy club. The group I am taking classes with at the moment is looking to start a troupe with all the people who are currently in the class. I have so much fun doing this and would love to continue.

I do have a problem I've been noticing. It seems that my performances are quite inconsistent. Out of the last four shows I've been in two of my shows went amazing and better than I could have imagined. However, the other two shows have been not so great. This bothers me mostly because I've noticed that the other performers have been more consistent than me.

I've been trying to come up with reasons as to why two of the shows were far better than the others. It seems that it may be because the shows that I did well, I started things and took an initiative right away. The two shows that I did worse on I didn't take initiative right away. This can be difficult due to the formatting and trying to give others opportunity. I will not always have the opportunity to start things in the show and this is something that I will have to work on. The group I'm in is full of seasoned performers with a theatre background or people that have careers geared towards entertainment. I'm currently an engineer, and I have no background in theatre. I think this could also play in. When I'm sitting on the side at the beginning it becomes really intimidating to see everyone up there consistently making the audience laugh, and I think that puts a lot of pressure on me. My main problem with the last show was not getting in enough. I kept thinking I have to come up with the most interesting thing or have the perfect line and if it's not good enough, I won't get out there. The order has been GOOD BAD GOOD BAD. I think it's also possible that after a good show I put too much pressure on myself for the next show. I feel like I need to somehow get in the mindset of just going out and having fun with my friends and being goofy and not relying too much on the audience's opinion of me. I just don't know how to get there.

I talked to my team about this, and they said if I have an idea just get out there and they will be there to support me. If any mistakes are made we can talk about it later or practice on it. They said during the show I should just trust my instinct.

I'm also really hard on myself most of the time in general. I think in life this has paid off for the most part. This can still be worked on. However, in improv I think this mostly hurts me.