The perfect heart can be quite a tricky shape to draw, so here’s my tip... fold a piece of card in half. Take a small plate, ribbon spool or anything round of the size you want, and place it over the fold. Draw around the curve.
Then take a ruler, and draw a line from the side of the circle to the fold. If you make a short line, you’ll have a fat heart, a longer line will give you a ‘Scandinavian’ shape heart! Simple!