It's problem-solving day for me today!
I don't know, maybe it doesn't look that streaky, but it bugs me and I just have to go back and paint over it. I almost feel like I have OCD sometimes! Part of the problem might be because of the transparency of the paint and/or the medium that I use that causes more transparency, thus requiring more layers. It could possibly be the lighting too. I haven't had good results when I've tried painting in thicker layers, so until I can figure it out, I will just have to slog through with this slow, time-consuming way.
Okay, next week I'll have more progress shots.