You can still "compose" your own stuff if you can't read/write abc. Find something you like, and copy the notes. Find something else you like, and copy those. Put them together in one file. MAKE SURE that you put the sources in the file (Title, composer, wherever you like). Don't claim you wrote it all by hand if you didn't. I've put together a few that I really like, some are simply changing the order of the notes, while others are two or three songs put together.