How do I add a directional idle animation?

I am currently trying to get the movement animation of my player complete. The player movement is fine, but the directional idle animation is giving me some trouble. I have the blend tree idle set up, but I am not sure if the parameters need to be different than my movement parameters. I think I need to store the last input and then set an idle animation to that value.

Can anyone provide some direction? Thank you

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