美国采购需求：和纸胶带、计划贴纸、牛皮便签、日记卡、翻领别针、金属书签

I'm looking to create some custom PET tapes for my clients, but I currently don't have any specific designs or images in mind. Could you guide me on how to get the design process started? Any suggestions on how to collaborate effectively would be great. Additionally, I'm also interested in sourcing 3D foil stickers for my website. If you could provide details on the available options and pricing, that would be really helpful. Looking forward to your response!