For this long necklace we used approx. 40 pearls making the necklace approx. 30" long. You can customise your design to be shorter or longer depending on your preference. 

Thread a single pearl onto an eyepin, trim and loop the other end of the eyepin to make a pearl charm. 
Repeat this for another pearl and connect the two using a 4mm jumpring. 
Repeat this until you have connected the amount of pearls you want. 

At one end of the necklace, attach a 4mm jumpring and then a 7mm jumpring. 
At the opposite end of the necklace, attach a 4mm jumpring and connect a lobster clasp and an extension chain to this jumpring. 

Cut a workable length of wire (approx. 2-3")
Thread this through a heart bead.
Take one side of the wire and create a loop.
Hide the end of this wire by wrapping the other side of wire around it.
You should end up with something that looks like a 'wrapped loop'. See image.

Cut off the end of the extension chain and attach your heart charm to this using a 4mm jumpring. 

Cut off the end of the extension chain and attach your heart charm to this using a 4mm jumpring. 

Create 5 more heart charms.

Find the centre of the necklace and attach a heart charm to the jumpring closest to the middle.
Attach the other heart charms at points between the 3rd and 4th pearls from the centre and the 5th and 6th pearls from the centre. 
Repeat this on the other side of the centre heart charm. See main image.