Check the seams that run down the center...they should line up...this is off. My bottom block is at an angle and needs to be straightened out.
I think I can fix it by only picking out one side. I pick out the seam on the right side connecting the block to the row of blocks above it.
I line the center seam up with my ruler to the other seams. It is now laying straight.
I press that right side down so I know where to sew it so it will still be in line.
I hold it in place and carefully open it up so I can pin it in the back.
Check the seams that run down the center...they should line up...this is off. My bottom block is at an angle and needs to be straightened out.
I think I can fix it by only picking out one side. I pick out the seam on the right side connecting the block to the row of blocks above it.
I line the center seam up with my ruler to the other seams. It is now laying straight.
I press that right side down so I know where to sew it so it will still be in line.
I hold it in place and carefully open it up so I can pin it in the back. 
