Abstract Work

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I like the top one better, the sepia doesn't really flow with it. I think that it needs some color isolation to really improve it. Give the triangle a nice color and add a few of those more stringy glow brushes.

 

I like both, however I don't really like the fact that both pieces' focal point is pretty much in the middle.

 

They look great, i like the top one better

 

The central areas of the triangle need to be lightened up further - currently it all just blends into this dark mass of lines. Somewhat similar to what you've done with your name at the bottom, the triangles need highlights as bright as that.
Also, moar contrast!

 

Lacking a lot of contrast and lighting in general. Not a fan of the globule things in the background, they are random and skew the flow too much imo. They could also do with more detail, smaller triangles and perhaps a few picture elements added.

 

work on your composition, colour, lighting effects and contrast

you need to add more detailed effects and arrange them in a way that is easiest and most interesting to look at.

also more flow would be nice