Try a Sample
The following paragraph has errors of several sorts. Copy and paste it into a word processor and then proofread it as carefully as you can. First look for sentence punctuation errors (fragments, comma splices). Then check to see if you can spot any of the errors you know you make in your own writing. Finally, proofread one last time for spelling.
To enhance my ego, I tell little white lies to my friends. "I am the best football player in town"; is an example of a little white lie I tell. I tell this lie to my friends so they will think I play football well. It does not matter that the last time I played football, I fumbled the ball six times, threw three interceptions, and scored a touchdown for the opposing team. If a little white lie is available, and my friends will believe it, I will use a little white lie to avoid embarrasment, and to inflate my ego. When a friend ask me how my date with Marcia was; I certainly will not tell him the truth: that she dropped me flat for some football player. I will tell a little white lie, to inflate my ego, and say: "Marcia and I had a great time together," or "I broke up with Marcia, she's too ugly, I have a better looking girlfriend now." I will not tell the truth and damage my ego when a little white lie can mask the truth and magnify my ego. To avoid embarrasment and to protect my ego; I tell little white lies to my freinds.