Hi, I'm Iren, 17+ years of experience in creating a UI/UX design, APP design, graphic design and design systems (Figma, Adobe Suite), both from scratch and redesign of the existing projects. Currently, I am the Art director of my own projects, Sovisart Design School and Sovisart Studio, but open for communication and different ideas! 
It can be hand-drawn sketch or a certain picture, or even a photo, any text or something else. Calculations for the supplier are carried out both in inches and in centimeters. The length of the tube is calculated with all the technological requirements of a particular factory.