Many types of writers can be found on freelancing websites. They range from very good to almost but not quite literate in English. This can be a good thing because it shows that a market exists for all types of writing. If your intention is to make it in the field of advertising specifically, you will need to do a few things first:
Advertising is unforgiving to errors. Think about the last time you read any commercial in print that contained errors. If it has happened, I assure you that the company represented by such flawed copy issued a correction immediately and ceased working with the company responsible for the error. Make sure that you can proofread your work and it flows well enough to sell things.
To sell a product requires at least a basic knowledge of both psychology and business. If you can understand economics as well you put yourself in an even better position. The desire to create copy in this field should also spur you to learn the ins and outs of SEO and other aspects of driving web traffic.
Before you start approaching companies to work on their marketing campaign’s content, you need to be recognizable as an authority. Failing this, you must at least have a portfolio that proves you to be competent.
If you have done all of these things you can start approaching companies by doing the following:
If you’re the proactive type you can use a search engine to find companies that need your services. Once you make contact you can show them your portfolio or blog and use it to show how much you are capable of doing for them. If you think it might help, offer your work for a percentage of the increase in profit you believe you can make for them.
This method still gives you a means of seeking out clients but it also makes it simpler for them to find you. This method is much easier so there will be more competition for jobs. This drives the costs of each job down which will affect your potential earnings.
You can certainly lean everything you need to know to become a writer in this or any specialty. It takes much less time than ever before in history.