OK! I wanted to make a heart with 2 patterns, one of which I didn’t think I could align well with that side-to-side seam so I thought up a little cheat!
2 little corner pieces:
I am using the wrong side of the fabric on purpose:
Stitch & trim:
Press using the no-wiggle method as described by the just get it done quilts lady
Place right sides together and align the stitch line, sew down the middle:
Open, press, trim and voila! Only one division line!
Follow the rest of the steps as usual: