@Alan1988, I'm afraid this isn't the best cut, particularly because its edges are so rough and jagged. There's also a fair bit of snow and no collar. I've uploaded the source image so that someone can give it another go.

If you want to start producing cut-outs, have a look at the guidelines in this thread, as well as the many video tutorials for each technique. I recommend using remove.bg to remove the background from an image as well as photopea.com to tweak, both free tools which do an excellent and quick job - watch the tutorials in the above-linked thread 👍