Step 1: Draw two circles for the eyes.

Step 2: Draw your nose. (NOTE: This may determine Gilbert's mood)
Step 3: Draw a line for the top lip.

Step 4: Draw a curved line from the bottom lip to build the body.
Step 5: From the right eye, draw a line to complete the body.
Step 6: Add little circles for the eyes. You're done! 
The world is your oyster! Gilbert is customizable! He can replicate any expression, he can wear any kind of outfit, he can be anywhere and anything!