I'm not sure if you happened to read a comment I left for you only a few weeks ago. But if you didn't then here ya go. I don't see any inspiration or basic understanding of how renderings work. Here's a challenge for you. In your next post, show us that you know a process of creating form. Try drawing something OTHER than a vehicle, like a spray bottle or a pair of sunglasses. Oh, and here's the catch, don't do it on the computer. Do it in pencil, or pen and marker. And like I said in my previous reply to one of your post, in the past few years that you have been throwing up sketches, I haven't seen a whole of improvement. Here's just an example, I'm a graphic designer but I dive into other things to keep my mind working.