Never lie about your major suit holding. Lie about your minor suit holdings all you want - bid three card suits, two card suits and singltons or voids. If you respond 1
to an opening bid always have at least four spades.
Don't be 'pigish'. If you are already getting a top don't try for more. Two examples: If you try to sacrafice at 4 and they bid 5, do not double them. Most pairs will be in 4. You will get a very good board by defeating 5, not doubled. You gain little or nothing by doubling; however you will get a bottom if they make 5 doubled.
If the opening lead gives you a trick which allows you to make your imposible contract, do not risk your contract even slightly for an overtrick. Take your good result and run.
to an opening bid always have at least four spades.
, do not double them. Most pairs will be in 4