This is a try to making some painting of brush art in simple planes, I think, this is a Chinese Character "?", which is the first character of my Aircraft Design Bureau "Tianning Science and Technology"????, yes, this will be used only by me later in all my models here, to players of other Bureau, it's only a demo to show you can also design and make your own logo, do not just copy my brush art, how to add a logo to a plane model? just drag the circle base of the character to save as a subassembly, then in your plane modeling, drag the subassembly to attach to the fuselage of the plane, and transform the part to hide the base, making only the logo showing out.