Just like any other type of illustration, there are methods and strategies to drawing Manga / Anime clothes. Clothing is very important in Anime / Manga character drawing. You cannot deliver good character drawing without proper implementation of clothing. Manga / Anime illustration is rich in fashion so it is a great advantage to know how to draw clothing properly.
Facial expression makes an Anime character drawing alive. Always apply appropriate facial expression based on the mood of the character you are trying to depict. They eyes, brows and mouth are what makes a facial expression. Observe different faces below and see how the eyes, brows and mouth affect the overall appearance of the Manga / Anime face & head.
Here is a great Anime & Manga Side Profile View Face / Head Drawing Method that is very easy to draw with very impressive results. Adjust the construction guidelines to achieve different kinds of Anime faces. Observe and compare how the different spaces of guidelines affect the resulting manga face.