First you need a heart template. I just drew one free hand and cut it out. I folded the card in half and drew half a heart to make sure it was even. You'll need both pieces.
Pick your colour scheme and pull out all the fabrics you have. You can then refine them down to ones that go together. I was trying to avoid having all fabrics from one range here, but you can work that way if you have a charm pack or layer cake. I chose a little owl to be my centre focal point, but it's not necessary to have one.
Lay your fabrics out to find a pleasing arrangement. Put the aperture heart over the top to make sure they all fit within the window. Once you have your arrangement, just lift the edges of the heart to make sure there is a decent seam allowance to the sides, you don't want the edge of a piece of fabric right on the edge of the template or it wont get caught when you stitch.
Take your central piece and an adjacent piece and lay one right side up on the other (so both right sides are facing). Pin in place.
Set your sewing machine to do a straight stitch and sew along the top fabric, leaving a seam allowance of between 1/8 and 1/4 inch. Make sure to back stitch at the start and finish of the seam to hold the stitches.
Take your fabric to the ironing board and flip the top piece back and iron it flat.
This is what it will look like, hopefully without the big crease next to the seam! Oh, might be a good idea to iron your scraps first, I'm just too lazy! Now, trim the fabric back BEHIND the seam to about 1/4 inch.
Take your next piece and lay it face down on your patchwork unit. Pin in place. Sew along the seam again, trim, then iron. You will build up your heart like this - place face down where you want it to fold back, pin in place, sew, trim off the excess where it's covered by the fabric and iron.
Continue building the pieces around until you've sewn them all. Put the aperture heart over the top to check that everything fits. Once again, lift the sides to check you've got room for a decent seam allowance all round. If not, add another scrap.
Next, you can add trims. I trialled a couple.
When you've chosen a trim, you do the same as you did with the fabric pieces.
Now make another unit as the back. I chose not to have a focal point on the backs.
To try to remember where each piece was, I laid them out and then left them there, taking each piece as I needed it.
Once you have completed both pieces of patchwork, lay the heart template on the wrong side of one of the pieces and draw round it. I used an air erasible fabric pen.
Then sew slowly and carefully around the line you've drawn, leaving a gap of about 3 inches for turning. Make sure to back stitch at the begining and end of your stitching.
Trim abou 1/4 inch from the sewn line, clip the curves and cut off the point, being careful not to cut your stitches.
Turn and press. Then all you need to do is fill them with lavender, pot pourri or toy filling, then stitch up the opening. I used invisible thread to do that using a simple over stitch.
If you have any questions, please ask. I'm not sure I've been very clear with my piecing instructions.
Feel free to do what you want with your finished hearts - keep them, give them away, sell them, feed them to the dog, but please don't copy the tutorial.
Now get out your scraps. Here are mine!