As a professional copywriter, not only do I do a lot of writing but I also look at a lot of writing. One of the things I've noticed that set the good/great writers from the so-so is rhythm.

What I mean by rhythm is how the writing sounds. The rhythm of the words and sentences. It's a subtle aspect of writing, one not normally talked about, but that doesn't lessen its importance.

Unfortunately, rhythm is also tough to teach (which is probably why it isn't talked about very much). It's something felt deep inside, like it is with music. It isn't as straight forward as pointing out a grammar error. What makes it tougher is that everyone has his/her own style and own unique rhythm. However, these three tips should get you started thinking about your own writing rhythm and how to improve it.

1. Watch out for long sentences. In fact, you might want to consider avoiding them altogether.

There's nothing inherently wrong with long sentences. And there are times where longer sentences are necessary (see next tip -- but note I said longer and not long). The problem is that long sentences have a tendency to turn into flabby sentences.

Think of a sentence as an eel. The longer it gets, the more slippery and elusive it becomes. Long sentences are sentences just waiting to slither far away and completely out of your control.

So what's going on with long sentences? One problem is they're tiring to read. By the time readers reach the end of a long sentence, they've most likely forgotten the subject/verb/point of the sentence. And they're probably too tired or too lazy or too busy to go back to the beginning of the sentence and sort the whole thing out.

Another problem is long sentences lack punctuation. Punctuation is a big part of rhythm. The start and stop of a period. The bated breath of an em-dash. Think of punctuation as your percussion section.

But when you write a long sentence, all you have to work with is the quiet sigh of the unobtrusive comma. Yes, they have their place. But it's a subtler instrument. (Think triangle rather than kettledrum.)

A good rule of thumb is to make sure a single sentence doesn