Some of my thoughts as I work through entries for "Cheers for 10 Years."
The biggest challenge I find is word limits, especially in this one where there is a built-in incentive to hit the limit dead on. I edit my stories to death as it is, but now every change I make often requires another change to keep the word count right. Break up a contraction and you gain a word that you have to lose somewhere else and that sort of thing. In more normal comps, the challenge is to rein in my tendency to verbosity. Long sentences and lengthy descriptive or expository passages are a problem when you can only have 500 or 1000 words. Comps have definitely taught me the value of editing and keeping my verbal diarrhea in check.
What I like about comps is that they often inspire writing that I might not otherwise do. I have written for stories for comps elsewhere that I would not have written absent the comp. Sometimes it is because of the theme catching my interest, sometimes it is just the challenge of doing something different.
I do probably edit more carefully on a comp entry, but the deadline forces me to balance that with making sure I finish it in time.
Tips?
Read the comp description carefully. If there are required words, make sure you use them and maybe CTRL-F (Find in MS Word) for them to make sure they are there.
If it is on a specific theme (the current one is not), look at how you can apply that creatively. I have done a couple for other sites' comps that stretched the theme a bit, hopefully without breaking it (they accept them, so I assume I did not). Obviously, a story about snow and skiing won't work in a summer-themed comp, but maybe a story about someone remembering summer as they are out in the cold will.
The Goddess Dances - Winner - Cheers to 10 Years Flash
The Berry Girl - Third place - Summer Word Bank