As you can tell - I do a lot of baking. I enjoy the look of total pleasure on someone's face when they're scarfing down a cookie or having a bad day, and then I swing by with a brownie. It's enough to make anyone smile. I've been baking since roughly third grade, so I've got a lot of trial/error knowledge to pass along :) Here's one cookie-changing tip.
Whenever you add something like chocolate chips or raisins, etc to a cookie, cake, bread - whatever. Toss it in a little all purpose flour first so they're just coated. This will help "suspend" them in the dessert so you won't end up with a cake with all the chocolate chips at the bottom, or a cookie with no visible chips on top!