Not the best start ...

Yesterday I decided to get going on the Tessellating T's quilt in black and white that has been been planned for ages. Cut the first black and lots of white pieces which will be the background, checking the measurements 100 times. You guessed it, when I came to make the first block I'd cut the larger background squares 1/2" too small, so now I have masses of 5 3/8" squares to use up.Maybe there will be pillowcases too? I tried piecing to make it bigger - as below - but it doesn't look good so will re-cut, I think I have enough fabric. Hope this is not an omen!

I really like the pattern and it is tricky enough to be a reasonable challenge for me. 54 blocks to go. Target finish date is the recipients birthday (not named in case she gets to see this) in March.