When soldering a connection, it's very important to check whether it is good or it needs more solder wire. If the wires are not well connected to each other, the current will not be able to flow as it should. As a result, your craft will not work properly. Try and check in each connection whether the wires are connected as they were when you soldered them.
If there is any problem, disassemble the craft and solder the wire again. Note that if you don't disassemble the craft, there is a danger of soldering or cutting some other wire. You may just add another problem.