This is a sweet little patch. I intend to buy two blank craft cards and envelopes and attach a heart patch to each using double sided sticky tape. Do they still use that all the time on Blue Peter? I’m going to send them to two little-ish girls for a Valentine’s surprise.
Alternatively you could just knit two rectangles, swiss darn the heart (or one on both sides) and sew or crochet them together, to turn them into a little woolly pincushion or a pointless but cute woolly thing. You’ll probably have even better ideas. If you do, please share them!
Needles: I used 3.5mm but use whatever you have or prefer. 4mm would work equally well and will still make a patch small enough to easily fit onto a card.
Knit a moss stitch border with stocking stitch as the main part of the patch
Cast on 20 stitches
Moss stitch for 2 rows:
Row 1: *k1, p1*and repeat * until the end
Row 2: *p1,k1* and repeat until the end
Stocking stitch with a moss stitch border for 8 rows
Row 3: k1, p1, k to last st, p1
Row 4: p1, k1, p to last stitch, k1
Repeat rows 3 & 4 6 more times.
Repeat rows 1 & 2 once
Swiss darning/duplicate stitch: decorate the patch with a contrast yarn. See this video from Simple Stylish Knitting if you’re unsure about how to do swiss darning. It’s easy once you get into the rhythm of it. Sew in a good source of light, so you can see what you’re doing properly.
Both of my hearts are slightly different from each other. The main thing is to start at the top, and do the middle stitches first. Make sure the bottom stitches line up with those at the top. You can make the heart as wibbly or symmetrical as you like.