This is a small prelude, only 12 measures long. A D-sharp appears midway, which I interpret as a borrowed chord rather than a modulation to E major. In that case, A major is re-established in measure 7, leading me to consider this piece as 6 measures x 2.

I believe the piece can be presented more clearly by slightly broadening the tempo at the end of measure 6.

Now, regarding other points to note: The soprano moves as the melody line in a dotted rhythm, and this never ceases. Below it, eighth notes are written, and although the voice parts vary between alto and bass, these eighth notes also never cease.

Therefore, the melody line is the most important, and its volume should be set to be most audible; however, I would like you to differentiate between the bass and alto. For example, in measure 1, there are eight eighth notes in the alto voice; let's assume these are played pp. However, in measure 2, the eighth notes shift to the bass, so if you play them at around mp, it will clearly convey to the listener that it is not the alto. Please continue to distinguish between the alto and bass in the same manner thereafter.