Well done. It had a steady beat . Not to mention, its interesting. Not like the run of the mill, "I love you" or "Luck sucks" poems. You might want some more lines between "A weapon or tool is..." and "I am an expert...". You had an ABABAB ryming scheme but then you start to go into a AABB scheme before returning to an ABAB scheme. And sometimes you go to a odd rhyming scheme where you only rhyme certain words. I had to look at it a couple time in order to see it so it is probably not that vital. If you want to continue with the ABAB scheme ot whatever scheme you choose, then you might want to change that. If not, then I do not see the harm in keeping it that way it is. Either way, its still a good poem