you are mixing lights and you are positioning the light in a strange location.
use reflectors if possible or light indirectly so that the yellow lights mix with the existing lights.
to show depth you need to light in a way that reveals the objects shape, i.e. let the light fall off over the curvature of the object. You could light the left side wall and ceiling to create contrast. If you get too much contrast use a reflector on the right side to fill in the shadows. But you need to find something you like and try and recreate that look - if you don't know what you want its hard to get there.