I bought some poly chromos pencil crayons lately for my birthday and I must say there’s a huge difference between them and the cheaper made prismacolours.
To achieve the wood look I shaded in the tones first in the proper colours and then I took of burnt umber pencil and lightly shaded over it, probably about three or four layers and it turned out to blend it and make it look very authentic. So that was a surprise to me.
I am really liking these coloured pencils as an art medium. I thought they were for kids but the detail you can achieve is amazing.