All right, I'll just critique the first one to start off with. I might do the others later.
What went wrong: One, this seems so terribly generic. I can't tell you how many times I've heard the same ideas, the same phrases even repeated over and over in one poem or another. Try to show me something new, something exciting, something that every teenaged poet (yes, myself included) has not written at one point or another. Two, your consistent use of enjambment (a line break in a place where one wouldn't normally put it) gorws very wearisome, particularly in the middle of a sentence. The technique further doesn't work well with the rythmic style you've chosen, namely, blank verse. It can be confusing and annoying. Third, your word choice is severely lacking. There is a phrase my English teachers drilled into my brain, "Show me, don't tell me." This is definately the latter. Look for more vibrant words, phrases. Play with language a little. That also leads me into your lack of imagery. Anyone I've critiqued knows I harp on this, but I beleiev imagery is a necessary element of a poem. Use a scene to convey emotion instead of telling your readers the emotion itself. I promise you, the latter is more impactful. Fourth, there seems to be no emotion to this poem. It could simply be how tired and generic the subject matter feels to me, but it doesn't seem heartfelt. Finally, it's not the most glaring of problems, but you have several unecessary words thrown in. Not just places where they could be cut, but words that have no grammatical place in the sentence.
What went right: Though your word choice seemed lacking, it is larger than that of many others I have read here. You also show a better command of the English language than a good bit of what I have seen. These are both commendable. You also didn't try to make the poem fit into an archaic rhyme scheme or rhythmic structure.
How to improve: If you want to continue with this particular piece, I would suggest rewriting it from the ground up. However, I would suggest you continue more in the vein of your latter two poems and focus particularly about completing a thought within one line. It's easier to begin with than breaking thoughts into seperate lines. Also, focus on using more vibrant words. Make the poem come alive in your reader's mind. Play around with color in particular. Color, sound, touch. Find words that call up physical sensations. Also, may try freewriting a little before you put your thoughts to verse. It clears out all of the junk. Finally, just keep writing poetry. If you do that, you'll improve naturally.
Overall score: 3/10
Eternally devoted and wed to my darling pet, Nagoyaka Aikouka.
"Your Grace, all that you say is true. On the Trident, Rhaegar fought valiantly, Rhaegar fought honorably, Rhaegar fought nobly, and Rhaegar died.