Rainbow over Tulip Fields

A rainbow spans the sky above long rows of red, yellow, purple and pink tulips stretching toward the horizon.

Long tulip rows create excellent lines through the lower half of the picture. Keep red, yellow, purple and pink flowers in separate groups until the rows begin to point towards the horizon. The rainbow and distant sky are broad areas, so they become much easier after the field has supplied a clear lower border. If the board becomes crowded, return to rainbow over tulip fields and use its edges to divide nearby pieces into smaller piles.