Hi and welcome to the Yu-Gi-Oh! wiki! Thank you for your edit to the Shirley page.
If you need help, you can consult these pages:
Thank you for edits in changing everything to past tense - that is indeed the proper style. However, the lead paragraph of each article can still be written in present. Anything that is not in-universe can be written in the present tense. Thanks, Cheesedude (talk • contribs) 14:54, May 28, 2015 (UTC)