I'm not sure specifically as I haven't read it. But generally, a graphic novel with 'happy face' in the title might be about positive experiences, happy characters, or stories that end on a cheerful note.
The 'Two Face Graphic Novel' is likely to be an interesting exploration of the character Two Face. It might delve into his dual - nature, with one side being good and the other evil. The graphic novel format would allow for vivid visual representations of his split personality, his origin story perhaps, and his battles, both internal and external.
One way to draw faces for a graphic novel is to study real faces. Notice how different features are proportioned. When drawing, use a pencil so you can easily erase and adjust. For the eyes, you can make them big and expressive if it's a more stylized look. The shape of the face can vary from round to angular. Shading is important too. Use light and dark areas to give depth to the face. You can add details like freckles or wrinkles to make the character more realistic or unique.
Well, without having read 'happy the graphic novel', it could be centered around a character named Happy. Maybe it tells the story of their adventures, relationships, and how they spread joy or find it themselves in a fictional world filled with unique settings and other interesting characters.