put one's best foot forward

/P UH1 T W AH0 N EH0 S B EH0 S T F UH0 T F AO0 R W ER0 D/
verb
  1. 1

    To show oneself in the best or most positive way possible; to make a favorable impression.

    โ€œTry to put your best foot forward at all times during a job interview.โ€

Source: https://en.wiktionary.org/wiki/put%20one's%20best%20foot%20forward