I think i would consider reading some of the "hobbyist" books that show projects. Nuts and Volts is one. I'm sure in the Uk there are others. Probably have some in Oz too. Read the articles to get an idea of what they publish, and where the interests of the readers are. Consider building a project that "keys into" the areas of interest of the magazine. It doesn't have to be anti-gravity, many of the readers aren't very sophisticated. Reading some application notes for newer semiconductors could help. I wouldn't expect to sell the first few articles, but take the criticism to heart - because the publishers want you to succeed too - because you will help them sell magazines and make money. There are many small projects that are helpful and beginners would like to be able to build. Hopefully, you can come up with a few. Published articles will look good on your CV also. Cheers.