Fun Idea author, but I think your attempt at a drop shadow under the bust and the pedestal pieces pops it apart and it becomes floating chunks. You can see it happen in steps 4 and 5 in your SBS. BOINK. Repeat the top of the pedestal under the original to give it a 3D effect. Apply slight darkness (very similar to bevel emboss). This will give the top of the pedestal thickness and ground it. Look at your ORIGINAL pedestal bust creation, you had it quite right there. Careful with your under shadows, they can cause a floating effect as well. Yikes... You know what to do and I'm beginning to sound like the hum of a refrigerator. hehehe Great Job

Good advice above, you don't want a shadow between the bust & the surface it's on...and his right edge (our left) is pretty blurry.