Well, this is how I edited Fiverr’s delivery response:
"Hi {name},
Thanks again for your order! Your delivery is enclosed. If there are any problems, please let me know. I’ll get back to you as soon as I can.
Thanks again and have a great day! 
fastcopywriter
P.S. If you’re not happy with my work, you can click “Resolve Now” on the right and start the refund process."
This is my other response:
==================
Hi!
The attached word document has what I did. Please remember this is a subjective gig.
If you like my work, please give me a 5-star review.
If you really like my work, tips are always welcome. 
Thanks for your order!
Simon
P.S. If you’re not happy with my work, you can click “Resolve Now” on the right and start the refund process.
==================
What do you think?
I have no idea, I know the 2nd response is more likely to lead to tips, but perhaps I’m putting myself down by saying “if you really like my work.” Maybe I should just say: “If you like my work, please give me a 5-star review. Tips are also appreciated.”
This is why I hate writing for myself. LOL