Plz check my grammar?

Having a smile on my face, dressing formally, I did a great job on my presentation.

My visual aids were catchy and comprehensible since the presentation included art, graphics, photos and a fancy template to illustrate ideas.

I also organized my presentation very well, giving a lot of good examples on how to write an effective application letter, categorizing three easy steps to write a cover letter, including all the detailed information of how to compose an application letter.

However, I was a bit nervous in the beginning when I was delivering the presentation.

I felt butterflies in my stomach.

I must admit that I had a stomachache problem. For some reason, I suffer from stomachache every time when I present.

Recently I had to do a presention for ________________ . Although I was a bit nervous, as usual, the butterflies in my stomach did not prevent me from doing a great job.

My visual aids were appealing and easy to understand because I illustrated using graphics, photos and a fancy template.

I also organized my presentation very well and gave lots of good examples on how to write an effective application letter. In my presenation, I also categorized three easy steps to writing a cover letter. The steps included additional detailed information on how to compose an outstanding application letter.

I did this one for someone else .Sorry