This Raichu looks ready to explore! To bring it to life, I would start by coloring the body in a soft brown hue. The white belly should be colored a softer shade than the rest of the body to give an interesting contrast. The pointed ears should be filled in a deep brown, and the large red nose should be given a bright pop of color. The black eyes should be surrounded by a vivid yellow, while the soft black eyes on the cheeks should be outlined with a darker brown. To finish the picture, give the teeth a hint of pink to give a hint of realism. With the help of these colors, this Raichu's adventures can come to life!