This would be a great first pattern to make. It is very, very easy and have little to no points to match.
http://www.spotlight.com.au/inspirat...-garden-quilt/
You can make it larger by adding more rows. You would just need to measure your project for the finished size of the extra borders if you wanted to make it larger than the two sizes given.
I made it recently and it is my new favorite go to quilt pattern