Okay, even if a monkey is young, it will still have a good amount of wrinkles, crease lines, bags, sags, and pucker lines. You will pay careful attention when sketching out these definition lines because they are going to add texture to the monkey's face. Slowly start sketching in the wrinkle lines, crease lines, definition lines, and some of the shading too. Pay close attention to the eye areas and around the mouth like you see here. Before you start sketching in all the detailing, you will have to erase the guidelines.