1. I will be using this image from katypix.com.
2. Open the image and zoom in at preferably 200% [up to you, but 100% is usually not very accurate].
3. Select the pen tool. Make sure they are the same settings as this.
4. Start by selecting around the image.
5. Just keep dotting around the image.
6. When you get up to curvy/bend parts DON'T cut across but you should zoom in and select around it.
7. When you are done, connect the points.
8. Right click on the image and select "Make Selection". A box should pop up. Make sure the anti-aliased is checked.
9. Copy [Ctrl + C] and paste [Crtl + V] the image onto a new document or you can also [ctrl + x] the image- it cuts out the image.
10. my result.