i agree it totaly needs admosphere when you get to it ,i thought when looking
at the clouds that you could possibly use more layers to add more depth
like a bunch of transparent spheres at diffrent sizes with clouds to build up layers but i dont know how this would give off when applying shaders
and also every planet with life needs a bit of sunshine (lighting) but
then again maby your not aiming for that look

p.s dont ever let life get you down ,for all we know we live it once
so why worry/rush it through,its ment to be taken in like a ladys kiss.