1. Make sure you write some notes.
2. Make sure you should write some notes.
3. Make sure you don't write some notes.
4. Make sure you should not write some notes.
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Can we use all the expressions? What about #2 and #4? Are they acceptable?
1 is fine.
2 and 4 are not correct. They would be correct if "Make sure" were omitted.
3 would be correct if you write it like this:
Make sure you don't write any notes.