Are the following sentences natural to a native ear?
1. We felt like slicing our wrists after listening to his presentation.
2. You usually feel like slicing your wrists after listening to his presentation.
3. I put the paper in the folder so that it will not get crumpled in the travel.
In number 3, I assumed you meant "I put" in the past simple, which is why I put "so that it would ..."
If you meant it in the present tense, then "it will not" would have been correct. However, using "I put" in the present tense is fairly unusual (except in English language exercises!)