If you want to drive a nail the common sense way to do it is to aim at the head of the nail once you have set it in place with an introductory tap. You will bend or mis-hit it if you do that. No your aim must be at the terminus of the nail or the final point where the head rests on the wood. Don't even look at the head of the nail. Drive boldly and let it happen.
To cut on a bandsaw or with a hand saw look at the point just beyond where you are in the wood. Merge with your line.