Here is a final pic of the last unit i’ve finished touching up and rebasing.
Desert basing guide: (Note paint colours are Vallejo and the Basing materials and static grass are by Gale force 9.)
Step 1: Black Undercoat over a mix of fine sand and gravel.
Step 2: English Uniform.
Step 3: Heavy Dry Brush of Desert Yellow.
Step 4: Light Dry Brush of Buff.
Step 5: Very light Dry Brush of Deck Tan on the Highest points.
Step 6: Add very small amounts of Spring undergrowth and Straw static grass.