follow through

verb
  1. 1

    To execute or complete a commitment.

    โ€œI don't appreciate salesmen who make promises and then fail to follow through.โ€

  2. 2

    To continue moving the arms (and any held implements, such as a bat or club) or legs after striking e.g. a ball

Source: https://en.wiktionary.org/wiki/follow%20through