I don't think they look too bad at all! Especially if this is a first or near first try. Black is a really challenging color to get lit properly. You must have great recycle times (or using a lower power setting) on your light to get to fire it off a dozen times in 30 seconds! But, in all seriousness I highly recommend getting a high-output 5500k flashlight. Or even rig up a white fluorescent tube light to 12v of battery power and use that. You could also get a little soft box for strobes (I forget the manufacturer's name) to use either with your strobe or with this flashlight I keep recommending to people.
And you might try bumping your ISO up to 200.