you need to use 4 cameras to model. Front, side, top and perspective it sounds like you are modeling in 2d?
Check this out https://simplymaya.com/autodesk-maya-...ng/?tut_id=366
Or this
https://simplymaya.com/autodesk-maya-...=186&sub_cat=9
If you don't want to spend the money you can try youtube but i think you need to get some basic principles down before you start anything else.
Good luck
David
From a readers' Q and A column in TV GUIDE: "If we get involved in a nuclear war, would the electromagnetic pulses from exploding bombs damage my videotapes?"