Lips are generally dependent on the size and shape of the face. Makeup could hide the flaws of lips inline with the shape of the mouth. Makeup if done nicely could alter the appearance of the mouth and face.
For women with drooping mouth, emphasize the dip in the center of the lips and powder the corners. Apply a darker shade of the lipstick at the corner of the upper lips. Now finish of applying lipstick with a gloss at the center of the mouth.
For women with pouting lips, paint out the dip. Accentuate the depth of the upper lips. Use a slightly darker shade for the lower lip drawn a little within the natural contour of the lip.
For women with small mouth, use a darker shade of lipstick on the upper lips and draw in the cleft. Give squarer shape to the lower lips and apply a little gloss towards the corners.
For women with thin lips, outline the mouth fully going beyond a little after the limits of the lips. Use a darker shade of lipstick on the lower lip. Draw the corners upwards and outline the cleft distinctly.