Hi Folks,
Most competitions use this definition, a quilt is considered a miniature if:
1. is no longer than 24" on its longest side
2. if blocks are involved they cannot be more than 4" on their longest side
3. The quilt must be proportional in size. In other words if you took a picture of the quilt and did not include an item of known size (a coin, thimble etc) you could not say what size it is.