I like the idea of your poem and there are some great lines but it doesnt quite flow.... for example, "My head throbs with the broken promises,
The broken promises you poured down upon me.
I can't escape from the weight,
it's holding me down." ....this could be better express My head throbs with broken promises, the deception you poured down upon me, I am trapped in the cage of your lies and its holding me down..... thats maybe some idea to make it better flow.... but good start