Loving the D90
Nice shots the sky could have a little more detail ,
I have a D60 and a D90 and have my EV set on both @ -0.7 , but often have to set it lower for landscapes to keep from blowing the sky , I will then lift the shadow later in PP if I need to
The sky in your shots is not blown out it could just be exposed different to make the clouds stand out a bit better
The bright light at the top of the steps I would of probably underexposed that pic a bit more and adjusted the dark area later .
Thanks you very much for taking the time to post and for the pointers, greatly appreciated.