Okay, so I am such a Super Spaz when it comes to actually following tutorials and instructions. To redeem myself I thought I would post here to stop anyone else from being a ninny like me when trying to make a magazine purse from iron on vinyl...
1. Don't work with the stuff if you're SUPER tired. It will just make you want to go to Wal-Mart and buy a "boring" purse like my husband says I should.
2. If you're buying the "Therm-O-Web" brand, go for the "luster" finish. The matte is nice, but it ends up looking like packaging tape when you're done and if you really wanted that finish, just use the tape, it's easier in the long run and it doesn't make you want to puke every time someone mentions 'iron on vinyl'.
3. Measure twice! Trust me on this. I'm one of 'those' people who measures once and then tries to fix the mistake on my handy sewing machine, but the vinyl is unforgiving and will tear easily if you try to take the seams out that you've already sewn.
4. Don't use thick paper or fabric. It ends up being too bulky to work 'round the corners which are hard enough to finish in the first place. Magazines and vellum rock, but cardstock and such are a bit thick and end up looking crumpled when your masterpiece is finished. But I did figure out that if it does get a bit wrinkled, you can always whip out the iron and flatten it back out a bit.
And finally, if you do go a bit wonky and mess up, packaging tape 'disappears' quite nicely on both the 'luster' and 'matte' vinyl, so you can always patch up the boo-boo.
So I hope this helps at least one person out there so I don't feel so completely unruly about NOT doing things the 'correct' way!