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Sorry my friend, but your photo is nowhere near good enough. It must be much brighter. It must be in much better focus. And, the tarantula must be in a much better position. We need a photo something like the one I'm attaching of a male Chilean rose, Grammostola rosea. If you need advice/help in taking such a photo, get back to us. We can talk you through it.
Also, we need a better size description. Use diagonal leg span (DLS) as in the second photo of an Avicularia sp. Use either centimeters or inches, whichever you choose.