Extracting images in Photoshop can be time consuming and quite boring, especially with many small parts to cut out. But with some relaxing music it’s not so bad, almost meditative.
My favourite tool for extracting images is the Pen tool. It allows you to make very smooth and neat curves. It’s not easy to master the Pen tool (it took me a lot of effort). But once you know how it works, it’s amazing, you can cut out almost anything with it.