Orb Weaving Spider?

I believe this is an Orb-Weaving spider, although to be honest I have no idea so correct me if I am on the wrong track. The image is a two-three shot focus stacked image, captured with the Sigma 150mm macro, f/5.6, ISO 220, 1/1000. Focus stacked with Helicon Focus and post processed using Adobe Lightroom. Apologies for non-spider fans (this gave me the shivers too)