At my first comp(New Zealand Champiships 2010) my first solve was a 2x2 one, since they did 2x2 and OH before 3x3. This comp's venue was a Te Papa. There was a stage with hundreds of people watching (not sure exaclty of the number, but must of been around 200-300, anyway ther were a lot of people watching). They had tables that look like cubes. I was sitting in the middle front one. I had never used a stackmat before. I had no promblems starting it, on the first solve but, did have one DNF in 2x2 due to that inexeprince. Back to my first solve. I had learned the algs nessary for LBL in the last few days, I also revised them during the drive to the comp (I didn't live in Wellington then). Unfortunantly I keep screwing up LL. About 7 times overall. Each time I got more and more nevrous and annoyed. My final time was 1:42.00. Getting a DNF in 2x2 meant my first offical 2x2 average was worst than my 3x3 average and until my second comp New Zealand Nations 2012, I was offically better at 3x3 than 2x2.
The week prior to that comp I practised a lot, due to my exictement of being able to go to a comp, I was unable to go to New Zealand Champianships 2009 which also happened to be the first competion in Oceania. I autcally improved 10 seconds at 3x3 in a week from around 1:00 to 50 seconds.
Looking back, maybe the fact I had only just learned those algs didn't help, but it was the really was me being nervous. I didn't have much of a promblem with nerves after that solve. Also I remember when putting my 2x2 on the sorcecard I was the only one using a Rubik's 2x2 (the old one). It was tiny compared to all the Lanlan's everyone else used. I did borrow someones lanlan for 3 of my solves.
ANother note, I would of completed in 4x4 and 5x5 but I was no where near the cut offs. I was also using Rubik's for those puzzles as well. But I did but a Lanlan 2x2 and the F-II. Which were my first speedcubes.