Hi, i'm a bit of a lurker here ;-P haven't posted much yet.
For suits, i usually dont' get fitted until about 3 weeks out. Although i have my fabric picked out long before... LOL my physique changes way too much to get it done any sooner. Although i have a local girl who does many contest suits and is very fast with a good eye. I'm in fitness, not figure, so i don't have a clue about those one-pieces...
For contest prep, i like shadow's "practice practice practice" advice. Leave nothing un-prepared if you can, even your smiling, your walking, your little wave thingy. I also use many visualization techniques during contest prep, seems to work well for me.
I'm sick right now, and 3.5 weeks out. So i'm having a major panick attack....