I found the Itty Bitty Crochet Heart Tutorial for the first bunting. 

For the original pattern I've added two sc(US terms) rounds: 

first is in the same color and the next is in white color. 

I made these two rounds on back loops only.

For the thread I made ch 35, then sc in the top of right half of the heart, then ch 5, 

then sc in the top of left half of the same heart. 

Between the hearts I'm working ch 10, then again as above: 

sc in the right top, ch 5, sc in the left top, etc. 

My(actually not mine, it was presented to one nice lady) bunting contains 9 hearts in different colors of acrylic chunky yarn. I've used a 5,5 mm hook. The similar heart garland I made last year and I really really like it and therefore it adorns our fireplace almost all year with short breaks for Christmas and other holidays. But now our fireplace is empty because it waiting for a new triangle bunting which is finished and (in its turn) is waiting for the photoshoot. I  hope I can handle with all that very very soon.  :)

 And now about another heart bunting. 

It was my first time making Granny Hearts. 

And now I love them much more then previous hearts! 

The basic pattern is here. But I changed it a bit: in the 2nd round instead of each ch 1 which is between the 3-dc-clusters, I made dc(US terms) in the second dc of 3-dc-clusters of previous round. 

Accordingly in the 3rd round the 12-treble-shells goes in these dc.

 For the thread I used the same method, ch 20, sc in the right top, ch 9, sc in the left top, 

ch 10 to the next heart, etc. 

The same chunky acrylic yarn and a 5,5 mm hook and a lot of enjoyment! 

These hearts are more bigger then previous and I love them so much! 

*** 26/03/2013 Edited to add ***  Here you will find the written pattern for the coaster.