A Music Teacher Thanks

My daughter asked me to make a card for her music teacher, who is leaving at the end of the school year.  He was hired to fill in for a music teacher to took a year off when she had her baby.  He was "tough" to quote my kiddo, but she learned alot.  Personally, I liked him and will be sad to see him go.  I would like this card much better if I had done the staff (I think that's what it's called) black instead of gold and glittered.  I think it would have looked much cleaner, but it's done, and I'm not pulling it apart, as tempted as I was to do just that.  And, my sentiment is stamped crooked.  What is the secret to stamping straight?  I will have to do some research....there has to be a trick (she hopes feverishly).  So, all in all, I guess it's a good thing he is leaving, so he can't tell people about my crooked, glittery card next year.  LOL!