Step 6: That’s it for the initial sketch! You have the basic shape Grunkle Stan from Disney Channel's Gravity Falls. Now go in and tighten your drawing. From this point on, press harder with your pencil in order to get darker lines and a more defined sketch.
Step 7: Draw Grunkle Stan's nose on the lower right quadrant of the head. The shape of the nose is similar to a drop of water with a diagonal orientation. The top tip of the shape should be placed right where the construction lines intersect.
Step 8: Draw Grunkle Stan's glasses behind the nose using a series of lines. Draw a thin bar at the top for the top frame of the glasses. Then draw a couple of curved lines on the side and one small straight line in the middle.
Step 9: Inside the shape of the glasses, draw two small circles, one on either side of the vertical construction line. The circle on the right shouldn't be complete because it's behind the nose. Draw a small dot inside each circle for Grunkle Stan's pupils. Draw a small line under the eyes for extra detail.
Step 10: Use the bottom half of the initial rectangle shape as a guide to draw Grunkle Stan's jaw and chin. Follow the basic path of the initial shape but make the corners come in a bit to form the wide chin.