An outline in the kitchen
You can pick a modelling tool –a spoon- and start sculpting like a pro! Lots of Youtube videos illustrates how it should be done. Some even tried with a cook knife, but obviously we are not going to recommend that!
Fearing the repercussions of using sharp tools, a spoon is much safer and give natural results. Grab the spoon at a lower angle, and put it right on your cheekbone. Use it as a shield and apply the tanner around the spoon. Use only what is left on the brush so that you can keep on mixing until the product is well applied. Once you take off the spoon, your cheekbones would look sharply done.