Borboletas azues by Eduardo Souto is a lively piece capturing the rhythmic flavor of early 20th-century Brazilian popular styles. It uses rapid figures to evoke the movement of butterflies.
Focus on evenness and clarity in the rapid articulation of the short melodic motifs.
Comparable difficulty and character — good candidates for what to learn next.
Borboletas azues is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 3.
You should be comfortable at Henle level 3 — meaning you can already play level 2–3 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 Borboletas azues lasts about 2 minutes.
Borboletas azues 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 Borboletas azuis by Eduardo Souto, Bandeirantes: marcha-ragtime by Eduardo Souto, Bandeirantes by Eduardo Souto — see the full similar-pieces list on this page.