Looking for guidance/tips to improve in 3D modeling

Danami

Hi guys

My name is Danami

Program: Autodesk Maya 2009

I was wondering if i could get guidance and tips on how to improve my modeling skills by uploading some of my models i did. if there are major or minor mistakes spotted on my model please let me know so i can fix it and how to fix the problem.

Thanks for the help.

A gundan robot Gogg model from a tutorial i followed on youtube.

Reference:

Solid:

WireFrame:

Another model of a character model followed a tutorial on youtube.

Reference:

Solid:

Wireframe:

please help me improve by giving me tips and guidence how to improve these models and if mistakes spoted let me know how to fix it.

thank you

Danami

oh sorry i forgot to mention that if there is any good character modeling (low poly) tutorial you know out there for maya please let me know.

Thank you