If you have already ordered 1 pillow, change your pledge to the new reward "Buy 1 Pillow get a Quilt for 50% off".
If you have already ordered 2 or 3 pillows, keep your existing order and update your pledge amount to an additional CAD$ 60 for each quilt you would like to buy. The CAD$ 60 equals $50 for the quilt (half price) + $10 extra for shipping.
You can access and edit your pledge by going to your profile -> Backed Projects -> Manage Your Pledge -> Change Your Pledge.
Don't see the answer to your question? Ask the project creator directly.