I have realised some important information regarding cookies over the past few days:
Cut your fingernails when working with dough... because using taps when you have butter all over your hands makes for more cleaning.
If you want to use a cookie cutter, pick a recipe with proper dough. Do not think it's a good idea to create shapes on the baking tray before putting it in the oven.
Space your cookies otherwise you will have a GIGANTIC cookie.
Grease the bloody paper otherwise the cookies will stick.
Don't leave sugar unattended in the oven. Shit looks like a demon rising from a swamp if you come back to it too late.
Get someone else to pour you a drink after kneading butter into flour because you WILL drop the bottle, have it shatter all over the floor and have to stand there in broken glass and bubbling soda while your mother mops it from around your toes.
I fucking hate making cookies.