I need photos of horse shavings more expertly masked by photoshop expert.

So, I shot and masked a bunch of horse shavings for a new website, but, I can't get the shavings super cleanly masked and I'm going to need that done. Enclosed Pages 1 & 2 show the shaving issues. Sample Page 3 is because I need the trees cleaned up so the dropped in sky comes through more realistically, behind them.

There are 7 images of shavings sitting in piles as shown in image 2 and 1 shaving image where the shavings are strewn across the page, as in image 1. There's one shot of the trees, behind the big semi truck. So, 9 images in all. They should be prepped as if they're being used for print, even though I will be using them for web. The final result must be absolutely crisp, Fortune 500 quality images. If you want to give me drop shadows for the shavings, on a separte under layer, that's great too.