'I am muscle, I am arrow, I am bone...'
This phrase keeps the two good principles:
1. Originality. Cliche should be avoided at all costs and that includes saying things in a straight fashion that one might find in a prose rendering; if you've heard something being said in that way before, change it. Luka's literary poetry does a lot of transmogrification of often quite straightforward events by expressing them in novel ways (that also work, just because something might be new doesn't necessarily make it good). Go through your poem and see what is expressed originally and what is not. The originality imperative naturally leads to the use of metaphor, simile and other poetic devices.
2. Economy. 'I am vector' might help with the rhyme but is too similar to 'I am arrow' to add much to the meaning and also spoils the rule of 3 (which Luka uses a lot in his street poetry) and the natural closure of the phrase from the 4-4-3 syllable parts ('I am muscle' = syllables etc.). An expression of profusion is fine but repetition is not unless done for effect.
3. The other issue I would pick out is stylistic coherence. Different words have different degrees of formality and belong to different lexical fields so care must be taken when matching a smoking jacket to a pair of jeans and it should never be matches with Hawaiian shorts. Care must also be taken with solecisms (i.e. using a word incorrectly for effect) in order for them to be received in the right way by the reader.