Step 16: Thicken the shape of Phineas' legs. Tighten the ovals for his shoes, and draw soles on the bottom, a curve in front and a rectangle shape on top for Phineas' shoelaces.
Step 17: That's it! You now have a nice sketch of Phineas from Disney Channel's Phineas and Ferb cartoon. You can stop at this quick drawing for a rough, sketchy look or go for a more finished look by continuing to the step below.
Step 18: For a more finished, inked look, carefully draw over the final sketch lines with a pen or marker. Wait for the ink to dry, and then get rid of every pencil mark with an eraser. You now have a finished inked drawing of Phineas! You can stop here or go to the final step to complete learning how to draw the Phineas and Ferb character Phineas.
Final Step: For a completely finished Phineas drawing, you have to color it. You can use markers, color pencils or even crayons! Color Phineas' skin a light pink or tan color, and color his hair and eyebrows red. The inside of his mouth is a dark brown, and his tongue a dark pink. His shirt is a light yellow, and the stripes are orange. Phineas' shorts and shoes and eyes are blue. That's it! You have learned how to draw the Phineas and Ferb character Phineas.