Flow is what direction the 'tag' is going in. Ususally you find this out by the pose/shape of the focal point. You usually incrrease the flow by adding shapes/renders/c4ds to help point out the direction. Here's a good sig of mine that has good flow:
See this picture:
The dotted line shows the shapes that help distinguish the flow. It kind of looks like he's punching in an arc, doesn't it? Though this was mainly done by the render the shapes help it as well.
What I also seem to find is that you don't have a light source. Here's another:
See those arrows? The arrows indicate the light shining down, the it eventually goes to the darker corners.
What you seem to do is whack on a picture and just put on some effects. Which, is cool. I do that too. But if you wanna be good then you should show some flow, depth, and light source. Like I said, flow can be shown with additional shapes and c4ds. For depth, you can blur the background and erase, or sharpen and erase. (the focal) for Light source, you can either get a white soft brush and brush it lightly or go to Filter > Render > Lighting effects.
For C+C On your latest one, I don't really like the first. The focals are hard to see and the text is distracting. The second, I like better because the focal is clear and it's bright, though that splatter at the bottom seems random.