Give a razor at least 10 shaves before you give up on it. It is possible that you screwed up your edge somehow, but most of the time for a new shaver it is an issue of technique. If after 10 shaves or so you hasn't had a single one that is better, then it's quite possible that you rolled your edge or something to that effect. Chances are you will have a shave where the angle and pressure just seem to "click" and suddenly shaving gets a lot easier.