Hi. I'm no expert but this looks like an ambient light shot to me ie. your strobe hasn't lit this much, if at all. If you were shallowish on a bright day and had a high ISO, at f3.3 maybe the flash didn't light this image much at all? I would try cranking up your f-stop so your flash has to work harder against the ambient light. The white balance looks off too and it should help the image if you correct this.
I'm sure others way more experienced than myself will know exactly what is going on but hope this helps in the meantime.