This is so cool, I really like the guy who is standing there as though he were in shock. He adds a lot of contrast and characterization between him and the guys that are hugging cover. Great details too.
"The men donning full-faced helmets are Coalition Marines, professional soldiers.... Hmm, do the aliens use chemical warfare, then?
On a side note, the CMs' helmets appear strongly of German design....
"...the other two are colonial guard, the colony's militia, so that should also explain why the two kneeling seem more shocked and anxious than the others."
Ah, I hadn't picked up on that. I'd assumed they were infantry walking point (the other two, now ID'd as CM, I'd taken to be drivers), and the explosion had forced them to take cover against shrapnel behind their assigned vehicle. From their expressions, I'd thought that they'd either been very surprised (and this picture was "taken" an instant after the detonation), or that they'd had buddies in the destroyed APC.
Is the APC closest to the (mine? IED?) explosion screeching into reverse? I can see dirt spray flying up in front of the wheels. Is the guy in the truck trying to signify that there are two casualties in the cab?
Nope, I imagined it as a sharp left swerve with the driver hitting the brakes, thus the lit-up taillights. The marine is signalling that there are two hostile contacts, but I like the ambiguity presented in the thick or verge of action. The forward vehicle of the convoy was hit by plasma fire from an alien ambush, the large explosion is caused by ignited fuel/ammunition.
The men donning full-faced helmets are Coalition Marines, professional soldiers, and the other two are colonial guard, the colony's militia, so that should also explain why the two kneeling seem more shocked and anxious than the others. If you're interested in the backstory to Asylum there is more at the wiki, the story is adapted from a personal project of one of our team member's. Thanks for your questions!
haha i've still got lots to learn myself. just go at it and keep practicing. let others see your work and be open to critique, you'll get somewhere (the intuos3 is a great tablet, don't let it go to waste!)