Create now a new layer again and download a set of ready to apply brushes of smoke shape (http://www.deviantart.com/deviation/29341959/ ?qo=12&q=by%3Afalln-brushes &qh=sort%3Atime+-in%3Ascraps and here: http://www.deviantart.com/deviation/29341741/ ?qo=13&q=by%3Afalln-brushes &qh=sort%3Atime+-in%3Ascraps) and apply them on the picture:



Change the layer's Blending Mode on Screen.



Insert on a new layer a photo having pictured on it the grass (ctrl+v):



Apply the Color Range to mark out and move off the sky:



Create now a mask out of this layer: Layer ? Add Layer Mask ? Reveal All and choose the Gradient Tool of black color with a strong picture's approaching, hide the rest of the sky's zones and turn over the picture horizontally: Image ? Rotate Canvas ? Flip Horizontal:



Apply the next combination Layer ? Remove Layer Mask ? Apply and make the corrections on the grass' layer colors: Image ? Adjustments ? Selective Color.