Slybeard wrote:
It is very common for the cheeks to look thin at one month. Remember, you are only 1/3 of the way to your goal.
+1

During the scruffy phase the hair isn't quite long enough to lay well and often just goes all willy-nilly, leaving what appear to be gaps and patches.  Just give it time.  You have very good coverage and with those curls and darker hair color it will look thick before you know it.  

Great stache, too, by the way!
Tom



Some helpful links:
Library Central of Beard Growing


Taming the Wild Mustache
Tips for eating and drinking with a big mustache

Excess on occasion is exhilarating. It prevents moderation from acquiring the deadening effect of a habit. ~ W. Somerset Maugham
A jerk with a beard is just a bearded jerk, but a bearded gentleman is awesomeness personified. ~ Triibeard