Follow-through (noun)

1. The continuation or completion of an action or process, especially the completion of a physical movement or the carrying out of a plan or decision.
2. The completion or final stages of an action or process.

Origin:

From the verb phrase follow through, it means "the continuation or completion of an action or process, especially the completion of a physical movement or the carrying out of a plan or decision".

Examples:

1. The follow-through on his swing was perfect.
2. The follow-through on her serve was weak.
3. The follow-through on the project was lacking.
4. She had good follow-through on her shots.
5. The company had poor follow-through on their customer service.