Lord of Sands

the terror of the wastelands and his funny but deadly ball mech - I would like to create an epic but funny image with a mech and the kitbash heavy metal kit.
I rendered all subject in this image twice! And also a building not used! But I need one version on direct sunlight and one in shadows as I would like to create a cloudy sky with some shadow/light game on the scene, I know I can use volumetric cloud but I think it’s hard work control this game to have the right effect. So I prefer render one more image but have the full control on the scene!