Would give it 6 Stars if I could.
I LOVE this mask. It is incredibly high quality and the pattern is completely amazing. Have played around with it a lot.
BUT whilst it is a 6x6 mask, the thin border around the edge means it only patterns an area 5 3/4 x 5 3/4. As someone who primarily does Project Life it won't completely cover the length of a 6x4 card. But in that case I either distress the edges with ink to cover the gap or cut the card down slightly and mat it onto a 6x4 card.