can i put 23.97 footage on a 59.94 timeline

a fast way to check might be that you put your clips on a timeline, and export it the way your client is going to watch it. web, mp4, intermediate, original source and xml, etc.... use in out points ( that bar on top of timeline whatever it's called ) and export a few seconds.. and look at it .. then you'll have your answer.

🙂

usually 'interpret footage' when you add disparate clips will do the trick for you. whether stuff looks strange is too abstract and undefined ( subjective adjective ? ) to answer.