Sorry for the delay! We've been busy trying to get ready to move, but I snuck some time out today to finish this bag! :)
First you're going to need some large paper. I take it from my kids!
Set your iron to a medium heat - NO steam!
This is some plastic "fabric" I did a long time ago - See how it didn't fuse all the way? I've noticed the brown bags do that. You want to sandwich your plastic layers between two sheets of paper. I ran the iron over it again.
Keep the iron moving. I usually go in circles. Don't let it sit in one place for long - Say, for example, to take a picture! The plastic will MELT! How long it takes depends on the type of plastic and the size. Just keep moving and keep checking.
Here, I'm about to sandwich the plastic layers between two sheets of paper.
These are the same sheets of plastic fused together. Be sure to let it cool some before you try to take apart the "sandwich".
When you're using a printed plastic, be sure to put at least one layer of solid plastic on top. The plastic on the right is already fused. On the left I'm placing a sheet of white plastic on top of the printed plastic.
Here's the pattern I used. This will make a bag that is 10 1/2" high x 11 1/2 wide x 6" deep. I use about a 1/4" seam allowance.
Find some finished "fabric" pieces that will be big enough for your pattern when sewed together.
I sewed the pieces together, then top stitched with a zig zag. You'll want to make two of these.
Sew your two pieces together at the bottom and sides.
Now sew the corners.
I ironed together and sewed two strips for the handles.
The bottom, red Vogele Shoes piece I cut and sewed in to the corners for more support at the bottom.