Hello! I would love to work with your proyect, I can make a clean and very nice looking vector imagen of a default sippy cup that you can use to input every design you make later, I have years of experience with vector art so I can do some very detail sippy cup. I also have a degreee in computer science so I'm all about manuals and tutorials! I can make a PDF file with detailed information, screenshots and examples on how to nice and easily step by step input the custom design