Dunesteef Cover-art : Chalupa for you

I continue to be stupidly busy with work, and haven't had much time to do much in the way of art. I did volunteer to help out Rish and do a piece of cover art for the Dunesteef. I've been much slower with it that I would normally be. I've spent the last hour or so doing more of the lines based on teh original sketch Rish sent me. Here's the state of play right now :

Almost finished the outines. Next step will be colour.