Copywriting is about being persuasive.
So if you want to get better at copywriting, practice being persuasive. In person as well as in print.
Practice convincing your friends, family and business associates to try a particular food, accompany you somewhere, watch a certain show, or just to do “A” rather than “B”.
Notice what works. Notice what doesn’t. How do you deal with objections? How do you lay the groundwork for persuasion (bonding, getting them into an agreeable mood)? How do you “close the sale”?
Not doing too well? Read up on salesmanship and persuasion.
If you’re really serious about copywriting and you’ve never done it before, get a second job for a week or two in a telemarketing center, selling door-to-door, helping out in a retail store, or selling anything face-to-face.
When have a copywriting assignment, practice “selling” people on the product or service you’re writing about.
Can you get them interested in it? Interested enough to buy it?
Keep refining your ability to “sell” the product or service in person and you’ll be far more able to sell it on the page.
And your copywriting skills will soar.