Neat painting of Inquisition symbol

Posted in Custom Workstation

As the title says. This may have been asked before for some other symbols, if so could you point out or encourage my laziness and give me some advice? If you need to know, I am as an aside project preparing to convert a tank to Inquisition colours so would like to know if their is a way to paint symbols neatly (transfers wouldn't work, this is on two sides of a hatch in the tanks side).

Apologies if this is not a true 'figure', if so, could you advise me where to place modified Warhammer and other 'vehicle' custom questions?