We all have those days! A couple of hints for you:
Mark the backside (or what you want as a backside) of the batik with chalk before you cut the strips. Then they will all be the same.
I starch so it isn't so stretchy when I get to the last join. It's much easier to handle that way.
I glue baste to do my strips. I line up my strips on the ironing board. Fold down the same end of each to get my angle. Glue baste it to the other end of the next strip and pin to hold it while I take it to the machine. Then I chain sew them all, cut off the extra, press and am done! Easy as can be and the seams all face the same direction.