It all comes down to this:
I have never seen a screenplay that has benefited from MORE scene description.
Good scene description pushes the story forward and/or reveals character - in as few words as possible. Scene description is not just about DESCRIBING, it's about doing - because scene description is scene action.
That's just the way it is.
So remember the whole "less is more" thing? However you write it in the first draft, cut it by HALF in the second draft. At least. And make sure every word of scene description in subsequent drafts is performing a proper function, or cut it. And for God's sake, check your spelling and grammar. Oh - and kill those widows.
Make every single word count.
Scene description has its own section in The Required Reading List. Bookmark it today!