You can download sheet music from youtube page.

https://www.youtube.com/watch?v=BUnIJA5nTgM

I am providing some information and tips on how to compose a waltz for piano.

A waltz is a type of dance music that is typically in 3/4 time and has a strong, steady beat. To compose a waltz for piano, you can start by choosing a key and tempo that you feel comfortable with. Then, you can begin to experiment with different chord progressions and melodic ideas.

When composing the melody, it's important to keep in mind the characteristics of a waltz, such as its flowing and graceful rhythm. You can also include some syncopation to add interest to your melody.

For the harmony, you can use chords that are commonly used in waltzes such as the ii-V-I progression. This progression can be found in many traditional waltzes and it creates a sense of resolution in the music.

When composing your waltz, you can also consider the form of the piece. A typical waltz is composed of an A-B-A form, where the A section is the main theme, the B section is a contrasting theme, and the A section is repeated.

As you continue to work on your composition, it's important to listen to other waltzes to get a sense of the different styles and techniques that have been used in the past. This can help you find inspiration and make your own piece more original.

Remember that composing is a creative process, so don't be afraid to experiment and try new things. With time, patience and practice you can create a beautiful and unique waltz for piano.