Hi richg99, and welcome.

Do you have either Solidworks ($) or Blender (free) available? An image can be imported and used as a reference to draw a 2D sketch and then turn that into a 3D STL file for printing. I'm more comfortable doing this in Solidworks, but I know it can be done in Blender also (see Youtube vid here). One thing to be careful of is the scaling of the image to real world dimensions.

This technique might be available for the cloud based drawing packages as well, but i'd have to research that to be sure.