UPDATE: INKED LINES FOR BETTER VIEWING.
A breif little tutorial I whipped up in 1st hour.
If you cant read my messy-ass (typical) handwriting. here's the instructions typed out:
1: Start with a lightly drawn circle.
2: Draw a line to determine the size, shape, and direction of the snout. The line goes directly through the center of the circle. Extend the line at the back of the head for the neck. Draw a rough outline of the snout.
3: Draw a line that intersects the center of the circle with the point where the snout ends on the chin. This will help you place the horns. Draw the outline of the neck, using the guide line from the previous step as the "spine" of your dragon.
4: Draw a line from the center of where the snout meets the circle's edge to where the horn line intersects the top of the head. Extend it out as far as you want the horns to go. Outline your horns.
5: Things tend to get messy from here on, so make a final outline of the snout, remembering that the nose reaches the top of the guide and drops down slightly. It does not intersect the circles edge directly. Erase all guides except for the darkened triangle; you'll need it to help you place the eyes.
6: The dashed line shows where the eyes will line up to. Draw the outline of the dragon's brow as shown, halfway between the triangle and the top of the snout. Draw an oval shape, lining it up with the edges of the triangle as shown above. Erase the remaining guidelines now.
7: Add any fine details you'd like, such as pupils, nostrils, teeth, spines, fins, feelers, extra horns, ears, etc. Play around with various different combinations to make your creature unique. Congratulations, you're done!
Art (c) Takato14