This is a joke right? You offer 3D design from your website and this is the level of work you're showing on here.... what did you even use to make it, because even the default rendering on most 3D programs comes out better than this.
Seriously, this is going to be blunt, I don't even know where to start with the sheer amount of problems it has, both in the design of the vtol (well I assume it lands) stealth drone and the actual modelling and colouring in, sorry I can't call it a rendering, it's not even close.