Note:
This is not my pattern, and is available here (not original source either).
I have provided an English written copy (US Terminology) of this pattern.

Requirements:
4mm crochet hook
10g of yarn per heart
darning needle

Abbreviations (US Terminology):
sl st - slip stitch
tr - triple crochet
dc - double crochet
hdc - half double crochet
ch - chain
sc - single crochet
rep - repeat
st(s) - stitch(es)
sp(s) - space(s)
beg - beginning
sk - skip
yo - yarn over

Special Stitches
2 dc cl: (yo, insert hook into indicated st/sp, draw a loop through to the front of work, yo, draw through 2 loops) 2 times, yo, draw through all loops on hook.

3 dc cl: (yo, insert hook into indicated st/sp, draw a loop through to the front of work, yo, draw through 2 loops) 3 times, yo, draw through all loops on hook.

Picot: ch the required number of sts (5 ch, for example), sl st in first ch st (ch sts make a loop).