I enjoyed this piece, keep writing! Now, of course it's your choice, but you might consider shifting the wording of this slightly:

may your face meet's not a poser,

into this:

may your face
meet not a poser's

which is what I think you meant to say :-)

Oh yeah, and the centering issue can be caused by a few different things. The most often, I find, is not ending your tags cleanly. Always start a new center tag for each part: so it should be

<center><h3>what more?</h3> by @franciferrer</center>

(make sure the tags are exactly in that order. if they are <h3><center></h3></center> it will mess things up.)

and then put your image. If you need to re-center your image, put new <center> and </center> before and after the image.