Simply suggesting some of the wheels helped to give a sense of a moving vehicle and of course it made my task easier. To indicate greater speed I would normally lose more detail at the rear, but here I wanted to include detail I might need later. Spattering more muck around at the rear would also emphasise this effect.
Whilst you may not wish to sketch in the middle of tank manoeuvres these points can help when you are painting a scene with moving tractors in a field, or excavators digging up your local green space, and it makes quite a change from a still life after weeks of lockdown!
I will be doing a free 45-minute demo at 2pm on Tuesday 4th August which you are welcome to join in with your own painting at the same time - details are at https://www.shopkeeparty.com/
Both will be live online so you'll be able to ask questions.
Enjoy your painting.......