About this 3D model

I wanted to make a HD version of the bobbleheads for my nephew so I built the model from scratch. (Now with a more accurate face design!) EDIT: I've realized I didn't add the spring support. Headpin V1 is intended to be used with this spring, which was cut down to 1.3 inches. https://amzn.to/2Mtgvnc Headpin V2 (because the springs I bought are sold out) should work with one of these aftter cut to length: - https://amzn.to/2QhoyER - https://amzn.to/2ERQMRe SPRING SIZE fpr v2: 0.3" OD, 0.022" Wire Size, 0.713" Compressed Length, 2"OD 10mm, Length 30mm, wire size 0.56mm