Even though I usually do good edits, sometimes, either through bad decisions or complete unawareness of some of Wikipedia's policies, I may do some mistakes here and there. Here are my mistakes.
1. How not to do A1 edit
During a casual browse of Special:NewPagesFeed, I found two articles that had... 'bad grammar'. Deciding to attempt to delete the articles, I decided to use A1 to delete them. Turns out I used the wrong CSD since A1 covers a very narrow deletion criteria: 'No context' criteria.