This is a chop with incredible potential. However it has some glaring issues that mainly come into view once you open it up in higher resolution.
Lets begin with the obvious. The lighting and the choice of paint/reflection. The lighting is all over the place in this picture. I know where you've mimicked the paint from so I also know why it looks like it does. The sample is a heavily edited photo, shot with a very long exposure. This is what causes the streaks to appear along the side. The darks are a result of editing work that adjusts the levels uniformly. The extremely hard thing about it is that when you try to replicate it, it is almost impossible.
Your choice to use the composition with the truck in the foreground complicates things even further. It makes the exposure shot with the light painting impossible as is, but on the original red version the paint is reflecting a car, with a license plate quite clearly visible. Then you've got the bright light reflections in front that should be obscured by the giant truck trailer.
Ignoring the lighting and reflections the paint is nearly flawless thanks to the use of c/p. However it has to be questioned how well it fits the original car, if at all. There even seem to be some perspective issues. The rear wheel mainly is off a lot, and the front looks somewhat oval.
Now we've had the composition of the picture lets move on to the meat and potatoes, the real chopping work. One of the big challenges of using copied parts and a complex composition of image is making everything of similar quality. I feel it's still a bit too obvious where the copied parts stop, and the chopping begins. Like I said, leaving it in lower resolution it is almost invisible, but once you open it up in higher resolution you see some of the linework isn't as clean as it should be, and not all the brushed parts are equally good. The black on the wing, the awkward spot where the quarterpanel meets the windshield, the dominating blacks, the slightly wonky front seat, the doorlines, the jaggy/toony mirror. They didnt all get the love and care they deserved.
And then, unfortunately, there are the newbie mistakes still. The cutting, jaggy blacks around the intercooler tubing. The rear wing overlapping the roof of the car. The rear seat/upholstery eating into the door frame. The wing door (which looks good by itself) possibly being too big but mostly very out of place. It looks like it hinges somewhere on the arch. The reflection of it on the windshield needs to be much narrower on the far side. Right now it is reflected even on parts that point toward the camera. The carbon on the hood is of poor quality. Even though the leather texture and the stitching on the lower part looks excellent! The intercooler itself lacks depth and the giant gaping black hole of doom above it.
After this wall of text I can conclude that it is a very good chop... in the making. It's obvious you have ambition, but dont overreach and lose sight of the basics.
Artist formerly known as "Dev"