This is a basic outline of where shading should go with these specific light sources. If you have another idea for shading placement, feel free to use it, but be sure it makes sense regarding how you want the light to fall.
Red is where shadow falls on cats with average builds. Dark green is additional shading for more muscular cats, with short fur, as cats with longer fur will not have defining features like that. Bright green is optional highlights. Dark red is a highly recommended second layer of shading that will give the image depth. A second layer is a good idea for all chararts and light sources.