You bring up an important point - it can be harder to create an Error Log for SC than for other question type, because what constitutes a "mistake" is somewhat different. Really, most SC mistakes boil down to one of a few things:
1) Didn't read carefully and overlooked something in the sentence
2) Didn't know the rule being tested
3) Misapplied a rule

For my students, I have them record the following things:
1) rule that I missed
2) describe
3) signal that that rule was being tested - clue for how to recognize
4) other examples that test the rule in a similar way

For example:
1) parallelism
2) I messed up the parallelism - I chose "... from either the spotted sandstone or from the..." The "from" was wrong here - it's after the "or" but not the "either"
3) EITHER/OR - any time I see these, I need to match what comes directly after the first with what comes directly after the 2nd
4) [list other question #s here, or even copy and paste the full text of other EITHER/OR, BOTH/AND, etc]

Hope this helps!