First： Forget to turn off power before touching electrical wires
Never forget to turn the power to the electric box completely off. Just flipping the on/off switch to the off position is not good enough. There will still be power going to the box. You need to go into your home’s fuse or power box and flip the switch there. This will ensure there is absolutely no juice flowing either into or out of the wires you will be working with or near. Once you have completely removed the old chandelier, you can turn the power back on long enough to use a non-contact tester to ensure electricity is going to the hot wire. After you are done with this, turn the power back off to avoid the possibility of electrocution.
Second : Start without all necessary tools
Starting a project only to get so far into it and realize you do not have a much-needed tool is a huge hassle. Ensuring you have all needed tools before you begin will make your task much easier. A few tools you should definitely have nearby where you are working include a 4-in-1 screwdriver, needle nose pliers, regular pliers, a wire stripper and cutter, plenty of electrical tape, and a step ladder tall enough to reach the outlet easily. Also, don’t forget to have the chandelier close by. You may want to have some helping hands to hold the old lighting while you take it down and the new one while you put it up. While it can be done alone, help will come in handy since chandeliers can weigh upwards of 10 pounds.