Assuming you have no idea what to do the dte won't  help - but if you do then ignore me:
so you got your sphere(an oblate spheroid would be better but who's gonna notice 80 miles on the scales we're talking about?). you'll need a texture map for the terrain also one for your clouds. both should be 2(horizontal):1(vertical). so all you need to do now is figure out in the texture editor what those A B C and D things are for right? also you'll need to figure out the masking for the clouds  . . .  I can't go on - it's too painful (no really !!! it hurts to type due to pulled muscles in my upper arm.

looks good, Benjamin !!