Cross cuts are cuts the go against the woodgrain. Once you've properly measured and marked your piece of wood, guide the side of the handsaw blade with the knuckle of your thumb. Start the cut by pulling your hand saw up two or three times, then push the saw blade forward at about a 45 degree angle. It is preferable to begin your cuts on the side of the wood that will show less when the project is complete.
Be especially cautious if a contractor: comes door-to-door or seeks you out; just happens to have material left over from a recent job; tells you your job will be a “demonstration;” offers you discounts for finding him/her other customers; quotes a price that’s out of line with other estimates; pressures you for an immediate decision; offers exceptionally long guarantees; can only be reached by leaving messages with an answering service;