Ironing
Now for the fun part: Turn your work right-side out and take a moment to admire it! Doesn't it look so good?🤩
This is also the perfect time to give your work a good iron on both sides. The edges may be standing up a little from the stitching inside, and ironing now will flatten them out nicely. It's also your last chance to remove any creases, since ironing after the padding is inserted isn't recommended. Not all padding handles heat well!
Cutting & Inserting Padding
Cut your padding to size. I recommend trimming slowly and placing it on your banner every now and then to check the fit. You'll want a snug fit that won't stretch your fabric! Don't trim the top edge too short: The padding should extend as far up as the sides and bottom margins, so it fills the banner all the way to the top.
For my version of this banner I used 3 layers of extra stiff polyester felt, but any padding will do: Regular (wool) felt, or batting/wadding all work great!
Once your padding is the right size, slide it into your banner and flatten it out, making sure it sits neatly into all the corners.