I've done this in the past and happened to read it in this month's issue of Scrapbooks, Etc. too.
If you accidently spell a word incorrectly in your journaling and everything's already adheared, you can re-write the word on a scrap of paper and use popdots to place the word right on top of the misspelled word. Then you can do this with a few more words to give your journaling a pop. No one will ever know it was an accident. Or even re-write the word on a different colored paper and glue right over the misspelled word, without using the popdots.
Sorry I've been slack on tips...my mind is just blank. hehe