Good day.
Trying to model a car for a long time now.
Attached is a model I have drawn up...today I have changed from smaller network patches to bigger ones.
but there is allot to fix..so I only put up a side of the car to lower its size and if I understand how to fix these I can probably finish it.
On the pic with the red arrow above the front wheel there is an open seam that I do not know how to fix.

I watched the Keugmeister swagger video's on youtube many,many, many times....and if I understand it correctly
you create network, loft patches, do the Iso on the surface, reconstruct curve to polylines, loft straight and then subd.
but how do I maintain sharp edges and arcs after subd?

am I on the right track here?

Thank you!