Its hard to give any one piece of advice. Guess I would suggest getting a friend to help you. Second, I would recommend getting a set of spring compressors/clamps to compress the springs before you lower the a arm. You can purchase them from places like harbor freight or rent them from some automotive places. When lowering it, do one side and utilize both clamps (assuming you got two) thus you will bind the spring compression. Once you get the compressors on and the a arm lowered I recommend using a wedge or rope attached to the spring, but also something to block the spring in the direction you are tugging it. This is where you have to be safe. Once removed from the car, release the compressors bit by bit to avoid binding it sideways again risking it unbinding itself.
Those are my starter tips, anyone else can build on that. Also, do a google search for lowing a fox body and you will find some great picture laced step by step guides. Good luck!