The best way to make someone's birthday the BEST BIRTHDAY EVER is to bake them a kick-ass cake. Here's how.
Via: Graphic By Chris Ritter
Wrap your cake pans with these strips or wet towels to make perfectly flat layers.
More info here.
Source: bakedbree.com
Drop your cake from a foot above the counter before baking to bust any lurking air bubbles.
BAM!
(Warning: Don't use this for delicate cakes leavened with egg whites, like sponge or angel food cakes, since they need those air bubbles to stay light.)
Source: saveur.com