Download and print some free notation paper. Sheet music is written on lined notation paper, featuring blank staves on which you can print notes, rests, dynamic markers, and other notes to guide the instrumentalists as they play.
- If you want to write sheet music free-hand, the old fashioned way of Mozart and Beethoven, don't worry about drawing your staves on a blank piece of paper with a ruler. Instead, find some free blank staff paper online that you can print out quickly to start filling in with your compositions. If you are really serious though, it would be a better idea to go to a music store and get staff paper there. Its not free like online but your work will look more professional.
- On many sites, you can even pre-set the key and add the clef markers without having to fill them in yourself. Configure the staves like you want them, download the files, and print them out from your computer.
- Print out plenty of sheets to practice on and start your compositions in pencil. It can be a messy business trying to get your complicated ideas out on paper, so it helps to be able to erase and make little changes without having to recopy the whole thing.