Scotty,
That is an amazing storm cell/formation of clouds behind you.
I like this shot but the expression on your face has me bewildered...I've come back to it a few times and wonder 'what is he thinking'...is it;
1. Did I change the ISO accordingly??
2. Whoa..it's about to take the shot...quick..smile..no.don't smile...err...(click)..
3. Geeze that tripod's a beauty...
4. Here I am..how lucky am I? I love this job..what a cloud/storm.
5. Wonder if I'll be posting this on dslrusers...
As a 'self' portrait, at least on my monitor your face seems to be slightly OOF/soft..some gentle PPing MAY help improve this. The exposure on the whitest of the lighter clouds seems spot on with minimal/no blown highlights yet your face seems to have a tad of fill flash..nicely excuted.
I find the tower over your left shoulder a little distracting but it helps tell the story of where you are and what you're doing and I guess if you cloned it out the picture wouldn't be as 'interesting'.
I love how the sun has started to peep through the clouds bottom left, a lovely contrast to cloud over your far left shoulder.
So tell us mate...WHAT were you thinking as the camera went 'click'?
I'm intrigued!