Sister getting married, design time!

My little sister is engaged.  AH!.  She has been dating one of my best friends for awhile now and they decided they're getting married in December of January, soon!  They've got nothing decided yet except for the colors:  Chartreuse, teal/aqua, cream, and slate gray.  Lucky me (seriously, I love this stuff), they asked me to design their invites.  This is what I've come up with SO far.

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Both are on a matte, linen paper.  6'x9'.

I likkkeeeee......