3D Logos Galore

I did some 3D conversions of some logos from my previous schools a while back, and I've decided to share them here, to gather some comments and see where I need to improve my work. Enjoy, and feel free to leave your critics and comments. Keep them coming!

The first two are logos of Mindanao State University - Iligan Institute of Technology, and the bottom ones are of Philippine Science High School.

These are works in progress, so keep the comments coming so we can improve these, guys.