i think you can render a specular layer for the lower part of your lamp. then, u can increase the specular level that boost your shape of your lamp. i knew you want the bulb to be the focus point. however, you can slightly present your lower part by sharp specular. what do u think ?
for the bulb color. i prefer green or orange rather than blue. blue is cool tone. u want to make a natural mood, right? green and orange can be the good choice to your aims. will u put it in a child room? i think they like orange and green lighting
your clay doll is so nice. will you render a SSS layer over the clay doll in compositing. then, you clay doll will like great.