Those tires sure could use some air.
Overall, it looks pretty nice. There's a detail here and there that I myself might do differently, but that's mainly a personal preference thing. The astrodome is a little hard to see. The wing looks a bit tacked on; the colors and shading on it don't match the fuselage and/or engine nacelle very well. some details like the cargo doors and wingtip light tend to jump out from the rest of the image.