Tutorial: Create A Custom Monthly Calendar

Step 6 - Customize Your Calendar

Your monthly calendar now appears on the page.
Click the calendar and handles appear allowing you to resize it.
With the calendar selected, click to choose from many color schemes on the right to change
  the colors or make your own color scheme.

Click the Import Picture icon on the left to import a graphic image to further customize
  your calendar.
Browse for the photo or graphic file you want to Import.