Alice Ellen Charbonnet’s composition is a charming, simple pedagogical work. It is designed to develop basic melodic control and finger dexterity.
The student must ensure the melody is clearly brought out above the accompaniment in both hands.
Comparable difficulty and character — good candidates for what to learn next.
Brise de mer is rated Henle level 2 of 9 — beginner repertoire, roughly ABRSM grades 2–3. In the RCM system it corresponds to about level 3.
You should be comfortable at Henle level 2 — meaning you can already play level 1–2 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of Brise de mer lasts about 2 minutes.
Brise de mer is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include Für Elise by Ludwig van Beethoven, At Bedtime, TH 70 by Pyotr Tchaikovsky, Albumblad, EG 109 by Edvard Grieg — see the full similar-pieces list on this page.