Is it relevant?
Is it distinct?
Is it different?
Will someone find it valuable?
Will it get someone’s attention?
Does it set you apart, or rather, should it?
Have others found more success with one approach versus another?
Maybe, distinguishing yourself in your messaging, regardless of the medium being used, is what a potential employer wants and needs to see.
Keep working on refining, if you’re not seeing the the results that you’re seeking.