Press the seams as indicated in the photo.

Measure and trim the HST blocks to 4 1/2".

Block Assembly:

You now have all the parts needed to assemble your blocks.  I found it easiest to sort my pieces in groups of 2 contrasting Layer cake fabrics. Like the photo below.( Once you understand how the blocks are assembled feel free to sort the entire Layer cake bundle so they all contrast nicely.)

Layout the blocks so that you have the "plus parts" one color and the "frame blocks" the opposite color.  The following pieces will be used for the "plus" part of the block ( 2 x 5 & 2 x 2's). The other fabrics ( 4 1/2" HST's, and 2 x 3's) being used for the rest of the block.

Remember to keep your Light and Dark corners consistent for all your blocks ( My blue is in my upper left and lower right corners).

The block should measure 10" at this point, It finishes at 9 1/2" in the quilt. Once you have your blocks laid out how you like go ahead and sew them together.

Proceed with the rest of your Layer Cake pairs until all of you blocks are completed.

(Make sure you check out the additional methods for altering this block at the bottom of the tutorial, for other versions of this quilt.)

The quilt is assembled in a 6 x 7 configuration.  Once the blocks are assembled, you can add any borders, if you choose.

The completed quilt without borders measures : (57" x 66".)

Suggested yardage for borders and if your Layer cake doesn't have 42 pcs:

1/2 yd for border#1

1 yd for Border #2

1/2 yd - 3/4 yd of chosen fabric for binding ( I chose my fabric #2)

Sub-cut Fabric #1 into 7 - 2" strips

Sub-cut fabric#2 into 8 - 5" strips.

Cut your binding into 8 strips of desired width . (I use a 2" double fold binding which finishes at 1/4",but most people use 2 1/4" or 2 1/2").

Here's my completed  Add a "Blueberry" Twist quilt:

Here's what the quilt looks like if you alternate every other block to face up/down or left/right. I really like the pinwheels that form in between the colored blocks.