I began this model by drawing a flattened form based on my paper template. I drew this in Assembly mode in Solidworks, each folded segment a separate part then mated together. This would allow me to "fold" the virtual model much like paper.
To get an idea, here's what the model would look like once I begin folding it.
I can also refer to the physical paper model while I position the virtual one.
And add fillets to the folds to begin smoothing the form.
I create an offset surface from the first one to add thickness to the model. This is an offset of 1/10th of an inch.
And a lofted surface operation closes the form. I can now add details and begin to integrate other components.
But before I get into that, I'll be doing test prints so I can test the fit, look and feel of this form. Here's the model loaded into the Up! printer software. The print will take about 7 hours.
For fun, here's a mock-up of what this gadget may some day look like.