This selection of samples covers some fairly quick work I did for Aviation Theory Centre. Most of the line illustrations were to be included in their own existing illustrations for the purposes of updating ADF publications. Blackhawks replaced Hueys, F/A18s replaced types less relevant to Australia and it's likely theatres of operations.
Most of these were created by tracing over a digital photo of a scale model. I find this is a very effective way of getting the angle just right. You can also control what stores are loaded, something you have no say over if you use a found photo.