Nice location but the time of day has left you with some hard light to contend with.
#1 is let's face it a snapshot, a fun one though it may be. It might have worked better taken in portrait allowing you to zoom in a little on the subject and hopefully get the top of the rock in.
#2 should make an interesting subject but the composition needs worked on. Don't get me wrong it's a pretty cool rock but once you take a shot this close it's just a shot of a rock which will fail to hold anyone's interest for long. Try getting away from the road (road sign bottom left, dead giveaway

) and shoot without it filling so much of the frame. Involve the hills at the back to give a sense of scale.
#3 looks like a rather angry rock demon, is this why you hid in the bushes?

Seriously the out of focus leaves at the front add nothing and obscure what should be a decent landscape. Again this would be better from further away and with all these rocks around you must've been able to get some elevation, landscapes are about capturing a view.
All over they seem pretty well exposed despite the harsh light, you could maybe crank the contrast to bring out the sedimentary lines. Read up on the rule of thirds and use this when placing your subject and horizon in the shot.