You made a mistake!
The good samaritan that I am, I'll point it out for you.

but if you mess up a few cookies... it doesn't really matter! You get to eat them :)

To be completely honest I'd completely rewrite that and have it read more like this:

Make sure to mess up a few cookies. Pay extra close attention to their imperfections and allow for them to irritate you. After you have been decently infuriated, acknowledge that these cookies are not to be served to the guests. You allow for those thoughts to sink in, and notice how you slowly start to let go of the anger and begin to salivate instead.
You didn't mess those cookies up. Far from so.
You only made those cookies be reserved for you. ;)

Hope they tasted as good as they look, @byn!
And that was a fantastic idea with the "cookies"!
I think I'll steal it for my birthday. Cake can be messy even when you're no longer a toddler. Even more messy. Ugh. haha :D