The sky does look good, though what I assume is suppose to be an upper cirrus layer I was suprised to break through it as low as 15,000 as these type clouds are usually 20,000 plus minimum and thought somewhere around 30,000 would be a good (more realistic) altitude. Either way nice addition and makes a big difference.
Looking forward to seeing the Cumulus to go with it one day.
...-Gixer