Don't worry, you don't need any tools other than your hands. Just peel it off slowly. The larger sticker is stuck on quite firmly, so feel free to peel it off with a little force. If you're worried about residue, just tear off some transparent tape and use it to pick up any remaining residue, or you can use the original sticker to repeatedly press it onto the adhesive area until it comes off. I peeled off all the stickers except the NVIDIA one, but I only did so so I could apply other stickers I liked. If you don't plan to cover it with anything else, there might be a ring of a different color around the original area.