That is really good, great perspective and I can't fault any parts or likeness to the original, and good reflections and shading!

Though you got some rough lines and parts, like the grille is un even as the same with some small parts too. You could also maybe smooth out the shading a little bit, but that's just my personal preference.
You could also maybe make the black parts more even. Oh, and I think the car could stand out more if you made some shading to the background, at least around the back of the car, as now the background is completely white it is distracting a bit.

Other than that, very impressive! Looks great, especially the headlights!

The first thing that strikes me is the way the shading has been put down on the hoods and sides so that the pencil marks flow with the direction of the plane. This gives me the impression of speed, even though the car is standing still.
The second thing i notice is that all of the lines look true and confident. The stance is spot on. There is very good use of value changes to show the planes and contours of the body.
Then i notice that there is a really good rhythm to the rich, dark values.
If this was my work, I would try to smooth out the shading, so that the values would flow more smoothly, but without loosing the sense of speed that you have now. I like the lost edges in the grill, and would try to use that for the outlines of the body, instead of outlining as in the right fender (left as you look at it). The rear wheel has less detail, and this helps to push it back, and the fender above it has a nice blur to the edge...you could soften the edge along that rear wheel well to add to the effect. I would think of picking out some highlights and dark values in the headlamp assemblies, using sharp clear lines there, to differentiate them from the rest of the car. A few darker medium values in the interior might help without creating distracting detail.
If this were mine i would also look to differentiating the shadow under the car a bit more by making it dark right up next to the body, then lightening it and feathering it as it comes out.
It is, really, a beautiful drawing of one the world's most beautiful cars! You really did a great job on this! Hope this critique is helpful.