Less is More - Lime and Black

I am unsure whether my card has enough blank space to meet the criteria of the Less is More challenges but the card just evolved as sometimes they do.  I don't have need of a sympathy card right now but I like to have one available because sadly we all need them from time to time.  The challenge this week is to use lime and black.

I need to learn to leave more white space on some cards as this draws the eye to the main elements.  For this card the black panel perhaps should have been narrower.

Thanks for looking.