Simply create a plane and place it anywhere, then start modelling to get into the wireframe you have planned. Since you have blueprints already setup, and you know what wireframe you are aiming for, just have the first polygon match the blueprints then extrude the edges quickly (pick any edge and hold Shift whilst using the Move tool). Have any new edge you make follow the blueprints and planned wire frame (Fig08, Fig09, Fig10 and Fig11).
9. Whilst you are modelling, keep looking at the reference images and see where you should put your edge loops, as the wireframe you have planned might not be enough to know all the edge loops you will need (Fig12 and Fig13).
10. The red circle in Fig13 shows where I have decided to start a new edge loop. The reason for that is because I noticed in one of the reference images how the flow happens in that area, and I simply made a quick cut, and to fix the tri I just collapsed that edge which helped to maintain a consistent topology.
11. It's hard to say anything more here, as this part is mainly about planning the edge loops. The tools needed to create the basic mesh are pretty straight forward, as it's only extruding edges and moving the vertices, but none the less, having correct edge loops from the beginning will save you a lot of time in the later stages as you won't have to go back and rework the whole mesh. Doing a 3D model quickly doesn't necessarily need working like a machine with 10 mouse-clicks per second - it's more about knowing what you are doing! (Fig14)
12. Now, this part is a little bit tricky... As you can see from the reference image, this air intake is going inside a little bit and making a bevel, whilst the rest of the geometry continues the surface flow. It doesn't matter in which way you do this, as long as you understand the form. In my case, I just extruded the edges which start curving into the air intake separately, and extruded the lower edge which keeps the same form separately. I kept extruding that, then connected the edges and closed the gap. You could also do it in many other different ways; as long as you get the same form and similar edge loop, it's fine (Fig15, Fig16 and Fig17).
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