How can I write this information in fancy manner in my self appraisal to make it sound more appealing

I'm going to give you the advice I give on resume reviews and performance reviews. I recommend quantifying your contributions. Obviously not every contribution is quantified like running scrum or doing code reviews. But having zero numbers in your contributions is unusual. I also expect some more specificity on your accomplishments.

For instance:

Worked on XYZ application and delivered it ahead of time.

By how much did you deliver the application ahead of time? What did you do personally ensure this? It's a pet peeve of mine if someone tries to take credit for a team's effort. Being more specific about your contributions will help.

Worked on XXX application and delivered without single issue.

I guess I have a healthy bit of skepticism. I haven't seen any software project deliver without an issue. Is without a single issue actually reality? Did you do enough testing to make sure the end user doesn't get bugs? Or is it that you shipped without any blocker issues?

Documented various workflows

Being more specific here helps. Did you document how people should make coffee? Or how GPDR requests are handled automatically? The latter is a lot more impressive than the former.

How can I write this information in fancy manner in my self appraisal to make it sound more appealing

I'm going to give you the advice I give on resume reviews and performance reviews. I recommend quantifying your contributions. Obviously not every contribution is quantifiable like running scrum or doing code reviews. But having zero numbers in your contributions is unusual. I also expect some more specificity on your accomplishments.

For instance:

Worked on XYZ application and delivered it ahead of time.

By how much did you deliver the application ahead of time? What did you do personally ensure this? It's a pet peeve of mine if someone tries to take credit for a team's effort. Being more specific about your contributions will help.

Worked on XXX application and delivered without single issue.

I guess I have a healthy bit of skepticism. I haven't seen any software project deliver without an issue. Is without a single issue actually reality? Did you do enough testing to make sure the end user doesn't get bugs? Or is it that you shipped without any blocker issues?

Documented various workflows

Being more specific here helps. Did you document how people should make coffee? Or how GPDR requests are handled automatically? The latter is a lot more impressive than the former.