I can claim no responsibility for this card whatsoever - I have CASE'd it from Dawn Griffith. I saw it, and loved it, so had to have a go myself.
The flower is from Remarkable You. I heat embossed it in gold on Very Vanilla cardstock and then fussy cut it out. I've used Tip Top Taupe dotted lace trim and cardstock. The ribbon is Crumb Cake Stitched Satin Ribbon
The large Happy Birthday sentiment is from the Hostess set Happy Birthday Everyone - available only to hostesses or customers who place a €200/£150 order.
I think you could use this layout with different stamp sets - it's simple but effective, and you could use contrasting colours to change it up even more.