Well with the nature of the technique you can do it in a lot of ways. You can do a basic blend underneath, and then do your stippling with varied midtones; you can just stipple on every stage, working brighter for hilights; you can go back and forth and mix it up until it looks right, the possibilities really are endless.
In this particular case it almost looks like he did a basic blend from red to orange, and stippled on a transparent Gore type of color, with more in the cracks to make it look almost wet with blood. A mix of something like Tamiya Clear Red and Smoke could maybe work.
Who's the artist, btw? Many of them will answer questions if you know who to ask.