Here is my base work for the Mk 1. First off I attacked the wooden base I selected with some drill bits to add craters. Next up was a liberal application of filler coloured with vallejo brown. I used a gloved finger to define the shell holes and add texture to the groundwork. No sand or grit was added as I felt it would be out of scale for this base. Next up I made some wire posts using lead wire and added a bit of twig from the garden for a shell damaged tree.
In all it took me about an hour to get the base sorted. Got to love this small scale stuff!