June Siblings Together block

I call this block Roman Cross. I have just finished a top using this pattern and am just sewing up a jelly roll four strip version. My source was a 1994 magazine piece by Sheila Scawen. If you trawl back through my May 2020 posts you'll see a picture of it and on the 18th more instructions for WOF strips so you can have same colour crosses. 
Here I am using fat quarters to make one block, fabrics from a rainbow colour bundle from Purple Stitches. Strips need to be 21+ usable inches by 2.5".

5 different strips: outer ones will form
the cross

Sew two pairs aligning one end

Now add fifth strip aligning with the same end, pinning but sewing from the opposite end to avoid bowing.

Once  sewn and pressed cut the strip set into two 10.5" squares
and cut these diagonally in the same direction with the same fabric at the top, either left to right or right to left.

Combine the triangles from both squares into one large block (about 14") with the long bias edges on the outside.

Sew into pairs, pressing
towards the single strip.

Finally sew into a single block.
Press carefully avoiding the bias
edges.

Another one. If you undo the stitches in the seam allowance on
either side of the long seam you can make your seams circle round in the same direction which makes for a flat centre.