I would thin out some antler stain you (can buy it from any taxidermy website) I prefer Vandykes but paint spray or whatever you want with it snd let it dry. After you have this base color, then take it out in the mud and rub it in the dirt, bushes, trees whatever and stain it up naturally. If you rub mahogany branches on them it works the quickest and gives good color.
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"you can't fix stupid"