Betsy,
I'm like you, I just bought a new flash (Sigma 500 DG Super) and I have to force myself to use it. Initially, I tried the “Better Bounce” card featured here [
ABetterBounceCard.com]. Not bad but I always had to curve it forward a bit.
Then I found this site and made the diffuser out of foam [
DIY Reflector-Diffuser]. I glued the pieces together instead of using staples and it doesn’t look bad for something that takes less than $3 worth of material from Walmart. However, it was too big to store in my camera bag so I downsized it. Below are examples with straight flash (Sigma 500) and with the bigger diffuser. The lighting is much nicer with the diffuser.
Straight Flash
With Diffuser
Here is the smaller version next to the original as posted on the web. I used the better bounce card for this image.
Here is an image from my father-in-law's retirement function using the smaller diffuser.
Hope this helps a little.
Tim