I so want to do one wall of printed paper in the boys' room. Some of my favourite examples of layering pattern, print and texture in a child's room:
Bolig Magazine via Pinterest
via Ikea Family Live
via Dos Family. I love the mix of toys against this floral.
As for narrowing it down, I keep coming back to these two:
"Major Tom" by Princes & Crows
"Fin and Tentacle" by Trustworth Studios.