embroidery

a) sew the letters in simple stitches back and forth - tack and then tack back to fill in the gaps b) decorate letters with the stitches that you also use for buttonholes - so called buttonhole stitches so far for the picture above c) sew the thing onto a garment - a coat or something - or some bag in this case the material is some kind of paper (like in one-use hospital blankets, though this was from a pack of camembert cheese), so the thing must off even if the letters are to keep on: d) make step c a simple tack on two sides, sew each line or bend in each letter to the cloth under it with double rows of back-stitches, rip or cut off the paper thing and loose threads, do an extra cover of buttonhole stitches; if the thing had been in real cloth: d) strengthen step c, use buttonhole stitches in the edges, add double rows of back stitches in each letter line or letter bend, if it seems appropriate, but a well fastened textile background after steps a and b making the embroidery should do the trick too.