Here's a landscape. Took about two hours in Painter and Photoshop.
I did this one because I rarely draw anything mechanical.
I always try to write these posts late at night after drawing when I'm tired.
Here's a couple of digital master copies that I've done the last two nights. I worked on these probably a couple of hours each.
I felt a bit rusty, but by the end of the night I'd worked out the kinks and came up with a couple that I'm not embarrassed to show.