suzee's tips are SO true!
I am happy, other knitters "fake" it the same way I do.
I have lately droped several stitches in a seed stitch pattern to make a yarn-over-button-hole in the CORRECT row and redone the seed stitch quicker than I could even count.
For repairing stitches one or more rows down, I use crochet hooks a lot.
But with life lines and markers, you should come out just fine!
How much of your pattern is done? can you already see the master plan? That helps me a lot in lace: to SEE where the next increase/decrease/yo etc. has to fall, instead of counting it.
I am just doing the second lace jacket in a row so I know what I am talking about!