This is yet another heart-shaped multicolor LED flasher DIY kit. The soldering process is pretty straight forward. The silkscreen label should guide you through soldering. It takes around half an hour to build the kit and basic soldering skill is enough to build it.
The kit after full assembly:
Watch the assembly tutorial. You can watch similar DIY kits videos at www.kitstv.com.
Check all the assembly steps. You can also view all the images on Flickr