I'll tell you the way i do it.(There are others) For this image planes, you'd better use the newest wings version. Older had some problems, or small limits, better said.(jpg were not allowed, only powers of two..I think that's all solved now)
Follow these steps:
- See the two pyramid icons at the top bar(I'm using latest wings version) , the grey ones, at the left...you gotta click on the lighter grey one.You must see a white marque quad around the pyramide now.
Ok, if so, you are in ortographic, not perspective now. I tell you this so you can edit with real front, top, etc views.(perspective will confuse you when tracing over a blueprint(reference)image)
- I the empty space, right click, having nothing (at least nothing selected, or in the middle of the screen (move other objects away of the center, as any new object goes by default to the coords origin) ))
- In the pop up/context menu that appears, choose "image plane"
- click it.
- it now lets you choose an image.
- Now you have it there, (i advice you have setup blender camera in camera settings) rotate with mmb mouse button to see it.
- hitting x will bring you to front view. shift x , to the back. z to side. shift z to the other side...so on.
- so for example, you rotate your image till it's perfectly aligned with front, and hit X. usually, enough to rotate 90, 270, 180 º, as image plane come already aligned to a view, I think.
-create a new object (cube)
-You'd then "freeze" the image plane.In geometry window list, you can:
* block-freeze the image plane (the icon in the middle beside the name)
* (the eye icon hide an object, you dont need it now)
* put in wireframe the new cube or whatever the object.
* leave in solid (the tiny pyramid icon, also in geometry list) the image plane or u wont see the image.
* Put more or less in fron of image plane the wireframe cube. So u can se through it the image plane.
You now see through the wires of the actual model the image plane. But also, as you freezed the image plane, can't modify the image plane if acccidentally touch it.
Modelling now would be cutting edges a lot and moving vertices while in X, Z, mode (hitting thse keys) so to preserve correct view.If you hit then middle mouse button, you rotate and loose that, hit X or Z or yu, shift Z, again...
And of course, knowing deeply Wings modelling.