Start by sketching out your wolf. You'll want to get the basic shape of the head and mouth right before you start painting. Once you're happy with your sketch, start painting in the base colors. You can use a light brown for the fur, and a dark brown for the shadows.
Next, start adding in the details. You'll want to make the teeth look sharp and white, and the tongue should be a bright red. For the eyes, you can use a yellow or green color.
Finally, add in some final details like highlights and shadows. You can use a light grey or white color for the highlights, and a dark grey or black for the shadows. Once you're done, let your painting dry completely before adding a frame or hanging it up.