This fun site (http://www.festisite.com/text-layout/) allows you to type in your own words (poem, story, etc) and then it turns it into a heart shaped page. Other fun links as well.
Laser Cut Wedding Invitations, Elegant Wedding Invitations, Beautiful Wedding Invitations, Unique Wedding Invitations
For the thing at the side
Steampunk wedding invitation gears and by ShimmeringCeremony
Perhaps like the trunk is the sax and you've got music coming out of it and we climbed to the top...???
The pink heart shows tree trunk Maybe a music tree...
Music Wedding Invitation, a bit more simple lines...???
Music wedding invitationClaudia invitation by Luxurisse on Etsy
Free graphic for invitation
LONDON WEDDING INVITATION, skyline bit