That is in the nature of the game. Experience only comes from practice. I actually don't think it is that bad. I have certainly seen a lot worse, that have been salvageable.
There is a slight art to this. Try to imagine what will happen to the whole spring, if you straighten a particular part. Now try to imagine what will happen to the whole spring if you increase the bend on that same part. You have to understand that every change affects the whole geometry. This is why it is sometimes easier to remove the spring and work on a piece of paper.
I tend to work with the balance in the watch, but there are no hard and fast rules to this, other than to be patient, take your time, think carefully before you make a change, and use good magnification and good light. Some people use a couple of pins, others use tweezers, I've heard of people using sewing needles with the end of the eye ground away to turn them in to a two pronged fork. Whatever you use though, gently does it, and don't panic if you make a wrong move, just figure out what you did wrong and carefully undo it.
What have you got to loose other than a bit of your spare time? After all the thing is already broken.