Without too much complication, simple 7 watt C9 lightbulbs can be wired to this Chandelier. I did this to wire flicker-flame bulbs to a black chandelier, and the clear bulbs with with white versions.
Though you can make substitutions, here is what I used:
18/2 gauge lamp cord
snap-on C9 light bulb sockets from Action Lighting: http://www.actionlighting.com/c9-socket-spt2-white-100-bag-bag/
1" diameter thin wall PVC or cardboard tube
First, using a utility knife, cut all of the candle and flame-bulb silhouettes, unless of course you altered the design to not include them in the first place!
Then cut twelve 4-5 inch section of the 1" tube to act as the candles. Cut a roughly 1" deep notch through the tubing in order to secure them in place on the foam board silhouette. Hot glue can permanently secure them easily. Cut an additional notch on the opposite end of the tube, perpendicular to the first to allow the lamp cord and socket to properly seat.
Using the snap on light sockets, attach one and slide it into one of the tube "candles". loosely drape the lamp cord to the adjacent candle and add another socket. Continue working around the lower level, then up and around the upper level ending the wiring up at the center of the chandelier leaving as much of a tail as required. Add the plug of your choice.
The wiring "disappears" for the most part, but additional teardrop shapes can be hung from the wiring if desired.