thats definately a really good starting point, i can see, in time that you could become very good....
especially if that is your first!
well for the next attempt try some different times of day, some sunsets, sunrises etc. therefore you can get some gorgeous light into the skies
you could also try recorder (i think it worked in fsx (if thats what youre using)) which allows you to get some really cool angles into it.
Im certainly impressed mate! :)
cheers
james
