It didn't have great quality and it seems like one big loop to me. I can tell it was done on a computer and no real instruments were used. All i can say is keep playing with your program and get better at it.
Guitar Pro 5 RSE Engine
It's really not bad, but I wouldn't suggest using it, find a better aternative. The chords on the guitars never sound to bad, it's the leads which are really hard to make sound decent. One thing you could do to increase the quality of sound is use a drum machine instead of the RSE drums. I used to do that and the results are a lot better.
Overall, I'd have to say that the composition was decent. It gets really repetitive and I can't say it sounds like something that would be entirely hard to write. The lead parts that come in sound a bit random, like the note choice wasn't taken into consideration and in a way make it sound out of key at some points. If this is an experiment I'd continue to experiment, but work a bit harder on it.
Hope I could help.