Here are the instructions, enjoy!
greaseproof paper (parchment/wax paper)
small heart-shaped cookie cutter
1. Prepare bowl with sugar. Then add a tiny drop of food colour to the sugar, and a little water to make it damp. Mix until evenly coloured.
2. On a piece of greaseproof paper, push a small amount of sugar firmly into the heart cutter (see 1) and level the top with a spoon (see 2). Carefully lift off the cutter and let dry (see 3&4)**
3. Repeat until all the sugar is used up.
** note: make sure that you do not try and move the cubes until they are dry, about 1/2 hour