Double Crochet on relief may be crocheted in front or back of the tissue.
To weave the high point in relief in front, make a loop in the needle and insert it from right to left and front to back, taking the body of the Double Crochet, no chain edge (see figure)
Make another loop and pull a stitch forward. Then continue weaving as a normal Double Crochet.
For Double Crochet on relief for back, work in the same way as the Double Crochet on relief in front, but introducing the needle from back to front.