Rainbow Plus-Plus instructions

Create a vibrant Plus-Plus Rainbow with these free printable 2D instructions and step-by-step color guide.

This 225-piece nature mosaic layers a full spectrum of colors into a classic arched rainbow. It is one of the most searched colorful Plus-Plus patterns and a favorite for decorative builds and classroom crafts.

Classified as hard difficulty with an estimated build time of around 19 minutes, the guide walks you through each color band from the outer arc inward. Keeping bands even as you progress is what makes the finished rainbow look smooth and bright.

Follow online or download the PDF for offline building. Sorting all 225 pieces by color before starting is essential so each rainbow band stays clean and continuous.

The completed Plus-Plus Rainbow makes a cheerful wall decoration, Pride-friendly display, or bright addition to any nature mosaic collection. Work band by band and press pieces flat for crisp color transitions.