Develop 3d drawing software pulg in or code to my shopify platform.

My project is in interior design. I want to build a flexible user friendly window in my website page for customers to decide the designs they want and manufacture it for them. There is input for dimensions and sizes of the object plus will need flexibility to add pattern or have a pr defined pattern. I haven't written a full project plan but would like to know if you can help in this. I live in New Malden, Surrey. I can drop by any time for discussion.