Here are the post-embryo Phidippus audax! And, a shot of the egg, where you can actually see where the legs (I think) were beginning to form. It's low resolution, kind of a degraded photo so I hope you can make that out. They are just precious right after hatching. At this point they can't do anything but crawl around awkwardly, they stay in the eggsac with their mother for several weeks, developing a bit more until their first molt, the 1st instar. Then they will have actual eyes and be capable of hunting and eating like adults, albeit on a tiny scale.
Phidippus mothers are very protective of eggs and babies.
Alien Arachnid, a Vinegaroon with Babies! (Audio) She extruded her eggsac about two months ago. The sac was clear and filled with 20 to 30 eggs submersed in a liquid within the membrane. They have begun to hatch. A new mother!