Ok, this moc is half bad.
Good colour scheme and weapons, that's it.
The lower torso/waist area is very lacking in the armour department, try adding some.
The bottom of the upper arm is very gappy, add some tires to the axles there.
Turn the lower leg armour upside down or switch it out completely.
And lastly, I'm sure we would all prefer it if you do NOT use tape to attach the beard. Make a custom head or find a more creative way to do it.
I apologize if I seem too critical, I just want to help you improve.