It looks alright so far, but let me give you a few pointers -
1.) When converting to a spinning head, please, for the love of God, change the RGB 64 to RGB 0. This greatly increases the quality of the spin, and is way more accurate on how it will actually look.
2.) Use the smudge and convolve tools to smoothen out the pipes' metal shading. Looks much smoother.
3.) Shade it normally, and not like a Tri-Linear Gradient, because it just looks unnatural.
For now, I give it 4.5/10.
Decent work, so keep the updates coming.