Clean-up a Logo - Use existing idea/files to create a better version

I have a crude digital image of my logo. The logo is already designed. I need someone to make a better version of it. I will supply the design and files, which are already created. I do not need creation, I need someone to create a better looking version. *The snakes are messy, and needs cleaned up, so it looks smooth. *The wings of the jet could have more detail, maybe with a gray color, noticeable sections, with rivets. *I would like a vector image (.tiff?). *I would like a raster image (Photoshop layers). *I would like the image with purple snake and yellow ball and some gray for the wings. *Black outlines on sceptor and wings would be fine. *I would like layers, with a transparent background (layers with the white background separate, on the bottom). *I would like the image to be large enough for a sign 1.5 meters by 1.5 meters, which means a vector file *The outlines of the snake, sceptor, and wings should be strong enough to be put on a business card. *I would like the snake, the wings, the wing color, and the sceptor (wand with ball on top) on different layers (four layers). *I've included some jet wings to look at for reference. The proportions can stay the same. This should be enough detail, but feel free to ask questions.