The creation of a fully working prototype


Hi all, I’m a new member so please forgive me if this isn’t the correct procedure. Is there anyone who could assist me on how I can create a decent prototype for my new product. I have created skittle shapes in material/fabric form that are flat pack but are then used to play as a 3D game once they are filled with sand from the beach or a sand pit. I have a basic sewn version already that I have done myself but my sewing skills are extremly basic. I could do with the knowledge of how to draw it out on computer so I can get the dimensions correct ready for manufacturing. Is this something that could be done through the group?

King regards