This is how I sketch my cars on location using pen and ink. The most important thing is proportion. Get that right and everything will look accurate. Concentrate on your subject. Draw what you see, and not what you think you see. Measure and use alignment techniques as much as you can.

Pen I used is a Sailor Zoom Nib:
   • Artist Review: Sailor Zoom Nib Founta...  

Other art tutorials:
   • Drawing tutorials (Traditional)  

My online courses:
https://gumroad.com/parkablogs

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