Hi,
Yeah, it's looking good but as Spud and MJ said, try to add variation to the lines both in intensity, thickness and length.
If you add just a little today, leave it dry and then tommorrow add more, even if it overlaps a bit, that will add variety and suggest the streaking occured over a period of time vs. all in one shot. Another way to get variation is to use the product with and without shaking the bottle first. This allows for a variety in the 'strength' of the color pigment.
You definately got the hang of it though.