I um-ed and ah-ed about which board I should ask this on, but decided on this one as you are all so helpful.

I'm making a simple little button tree wedding card for a friend, and this is where I'm up to:

My question is, is it finished? I had originally thought I'd do some grass and flowers and bark on the tree, but now I think it might be too much. Also, does the love heart stand out enough? I did it in back stitch, but maybe split stitch would be better?
The colour behind the tree is sky blue, but the flash has distorted it a bit.
Thanks
HW