If I have understood DDD Racing correctly, the perpective lines of the eclipse are in yellow, the perspective of the chop is in green. The chop should follow the same lines as the original. They don't have to overlay each other but should go the same vanishing point.
As for the chop, at the moment it looks more like a McLaren with eclipse lights. You still need to make the McLaren fit the Eclipse lines so it looks like an Eclipse chop. For a start, I think if you cut out the green section and then cut up and stretch the bottom section to meet the roof section.