Good, now, one leaves the part that one had:
and one will take the new edge formed by the chamfer, and etruder once, while occupying oneself only of the front one, small sight of extrude:
Here, one still sees how to make to have an angular part which leaves in smoothed, a chamfer, in after, one it separe, in green, one sees the two parts of the chamfers separées.
For the arriere, similar, although it is not very clean, but they will be lines reducing for the small bubble seen of extrude.
Modelisation of the bubble:
Good, here the part which will be necessary modeliser: bubble
Useless of preciser that that was not made a first blow
Good, one starts by making the part has flat, 6 extrusions, then, one connects the points of the bubble by trying faires to correspond them with the arriere and the front one, one adds also a small line because the car possede a small notch
Once again, optimized the number of cutiing, here, it is better owing to the fact that it there not cutting in full medium of the body
Outline:
The red points correspond has a top where a chamfer will pass, the pink lines, has a line has to add, or has an important line for the decoupe and the exactitude of the model
Once the part in 2d, it is necessary to make volume, one will take all the points exterior, and the rising, then, one take the points peripheric and so on, until A to obtain qq thing in volume.
It is now necessary to give the form, one is not occupied of the necks (passage of pane, petrol station, pane and carries), one will give the general form, that of a water drop.
With smoothing, one sees immediately if that will be good, if there are tripatch at the place strategic of the curved parts, it is not the sorrow to continue, the relfets are hung. It is thus necessary to try to see creepage distances, not obvious when the model is into monobloque, one thus needs separer the various parts.
Separation of the various parts:It is the easiest part if one took the trouble to follow the model and to look at its various forms. The bentley possede a rather banal decoupe, except for the front one, Because more parts overlap.
Perspective sight
Now, it is possible to do what one with the parts, should just be granted their junctions want.
This image summary well the things, once separer, one little to occupy itself just of a part, to add edges a little everywhere, it is necessary just that the junction with the close part is correct.
each pink line, corresponds has a line to add after separation, that for the small bump, was chamfered; in order to empecher the downward part be deformée too much.
The part in blue watch also that I added two lines (with the fast tool section of the edit poly) to give the good form (cad a half the moon), without problem because the edge of the pink part is plane.
Very important also, they is the edges added on the level of the holes, for eviter to have the chamfer which passes below the plan.
The details are rather easy A to set up, for little which one respects some regle:
More 3D Graphics: 
