1. Don't bother, buy them.
2. If you have to make them try to do it sober.
3. If you decide to get all arty and put in concealed pockets, don't cut out the pockets until you've cut out the wristbands.
4. If you cut out the wristbands properly make sure the back neck is going both ways not all the same way.
5. Don't panic when you can't find the scissors, you're sitting on them.
6. Don't cry when you realise you're cutting out fat dresses again from the fabric you were saving for the thin dresses you thought you'd be wearing by now.
7. Forget no. 2 and drink.