It's important to realize that the copy you write should not be focused on you. Always remember to focus on your prospects, as they are the people you are promoting to. Your readers are only interested in what your product is going to do for them, not about your great qualities or accomplishments. They want to hear how you or your product is going to help them. People have a short attention span when it comes to hearing about someone else's greatness, so going on about this will only cause your readers to leave your page. Remember, when writing copy, "you" is a much more powerful word to use than "I." Remember, readers who get bored hearing about you and your achievements can easily look up one of your competitors. You should not save the part of your copy that really interests them (the benefits) till the end. Keep in mind that all of your copy should be primarily about your audience.
It's also essential to test your copy at all times. Every aspect of your sales copy, from the wording to the fonts should be tested. Try changing various parts of your copy and see what effect this has on your conversions. You can sometimes see big results simply by making a few small changes in various places. For this reason, split testing copy is something done by professional copywriters. By split testing two copies against each other, you'll be able to find one that gives you more optimized results. An important thing to remember when testing your copy is to do it in parts. You have to test each part of the copy, such as the headlines and the various paragraphs part by part. This is to make it easier for you to understand the various elements and see how they're performing. The performance of your copy ultimately depends on how well suited it is for your readers or targeted prospects. And the only way to do that is to test it out in the open.
The name of the game is to keep it simplified. That's the golden rule of copywriting. Never make your copy too difficult and instead make it as easy as possible. Don't be too techie and don't use lots of big words. It should never be too complicated to follow. Some think that writing good copy takes years of learning how to do it. Copywriting isn't that hard to do, however.
It won't repel prospects, either.
You may find copywriting complicated, but soon you'll use it for everything you promote on the internet.