Thanks everyone... sorry responding late. Haven't been feeling well. Ok I got:
"When shooting with flash use a lower ISO setting (like ISO 100)"
When I asked earlier about shooting in low light, I saw people mention that I should be boosting the ISO 800... 1600... when shooting in the dark....Was that only if you were working without a flash?
Yes. When shooting in low light without a flash you have to push the ISO up. If you are using flash then you have an available light source that will cut through the darkness so you don't have to push the ISO.
In this photo it's quite posible that the flash was pointing directly at my son because I actually tried rotating it in every direction and it didn't really take the shadow away... even pointing directly up. I'll keep trying though.
Is this flash/Speedlite on a light stand or on the camera?
It definitely wasn't shot from the on camera flash.... Stopped using that a looong time ago. but the slave flash I bought is on top of the camera.... Maybe I should buy one of thos brackets which allow the flash to sit on the side of the camera instead of the top... I don't know...
When you say you're using a slave flash do you mean you're using a Speedlite on the camera hot shoe? I thought you had a slave flash on a light stand and was triggering it with the popup flash.
Have you checked out the Strobist web site yet?
You might want to check out this web page too: Portrait Lighting For Beginners:
Portraits With One Light