Ngl, I thought Porygon was pretty much persona non grata after the whole seizure thing (e.g. they stopped putting it in the anime almost entirely), so I'm surprised it's getting such extravagant merchandise. Time heals all wounds, I suppose!
I could make a sewing pattern for this so easy. Sourcing the motivation to buy all the materials and see it through is another question... could probably trial/error with some cheap muslin at a smaller scale though 🤔