I made my own design, just playing around with graph paper.

You can choose what size pieces to use, and if you are doing it all by hand (crazy girl!) i would go for bigger pieces in your pattern.

This is an example of one design:

a 90cm x 90cm quilt with 3 columns downwards (each 30cm wide plus seam allowance)

1st column - has a 30cm x 30cm square piece, then 2 pieces 60cm height x 15cm width

2nd column - 5 pieces 30cm wide x 18cm height

3rd column - 2 pieces 60cm height x 15cm width, 30cm x 30cm square piece

Plus you need to add a border that joins the front to the back.