Agreed. don't overtrade. Treat every single trade seriously.
4. On minor corrections against the major trend, add to trades. In bull markets, add to the trade on minor corrections back into support levels. In bear markets, add on corrections into resistance. Use the 33-50% corrections level of the previous movement or the proper moving average as a first point in which to add.
Agreed, but the exact number of 33-50% may differ. Whatever works well for you, stick with it.