Use primarily pink fabrics, a little bit of pattern in a different color is fine, but the fabric should read pink.
It can be any pattern you choose - paper pieced, patchwork, improv, whatever strikes your fancy.
Size doesn't matter, anything over 4" is fine.
It doesn't have to be any particular shape, although I would prefer a rectangle or square.
If you do need a background color for your block, please stick to white or off-white. Low volume that reads white is fine as well.
You are welcome to make more than one. Every pink block made and sent by August 2 will gain you one entry in my participant give-away. To get my address, please email me at DamascSt@gmail.com or reply to this post with your email address.