An unrealistic pose seriously undermines the realism of a scene.

I suggest that the palm of the right hand should be flat on the car surface - people rarely rest their hand on the tips of the fingers in reality.

Similarly, it would be extremely unusual to rest the weight of a leg on the tip of the big toe.  Clearly this foot is not bearing weight from the hips, but even in this case it would be more natural to have the toes curl forward and touch the ground on the ball of the foot.

This will seem really nitty gritty, however, small things make or break the reality.  The gun hand should rotate out about 30 degrees as this is the natural or effortless pose.  It takes slight muscular strain to pull it in as shown.  If you want to convey tension, I would rotate slightly the other way and press the heal of the palm against the hip.

It may not fit the scene, but how about a prone body behind the character shown, off camera, but shown in reflection on the car side.  That would add some drama.

Lastly, there is clearly insufficient nudity.  Hike up the back of the hem at least.  A little wind, perhaps ...

Klebnor

Lotus 123 ~ S-Render ~ OS/2 WARP ~ IBM 8088 / 4.77 Mhz ~ Hercules Ultima graphics, Hitachi 10 MB HDD, 64K RAM, 12 in diagonal CRT Monitor (16 colors / 60 Hz refresh rate), 240 Watt PS, Dual 1.44 MB Floppies, 2 button mouse input device.  Beige horizontal case.  I don't display my unit.