A lot of people don't know how to draw a realistic dragon head so I have to teach them!!:)
Step 1: Materials
3. Colored pencils ( whatever color it will be )
Step 2: Shapes
First draw a half-oval shape. You can modify it how ever you want. Then, a little part of the mouth is showing so copy the picture above.
Step 3: Details
The eyes are what you will want to do first. Make them big for a younger dragon and a smaller eye for an older dragon. Study the picture above for the same 3D look I have or, do your own. Horns are really just what YOU want to do so go free there. For nostrils just make two little slits in the nose. Then just draw the neck.
Step 4: Colors
Now be creative and just freestyle color it!!!!!!!!! :)