How will I write plot in novel form?

This is such a lame question to pose, but it's there and needs to be answered.

I feel lashed to the lean and opinion-less straight-forward descriptions of the screenplay. And now with the gates to the opportunities of narration thrown open my experience still lies in the simple lines and simple descriptions of the script.

Why am I holding back? Turn it loose. This is what I need to do: WRITE THE FUCKING THING. The rest will follow from the writing of the thing. This is true. There is a twisting that happens during the writing of the thing--the twisting keeps the strands together long enough to progress.