I just ordered my first two acrylic soap stamps and I'm wondering, ballpark, when the best time is to stamp cold process soaps? I tried it out on a bar that's about 2.5 months old and it cracked, which I expected. The batch I just unmolded this morning is going to be a gift, so when I stamp it I want it to look nice. Should I stamp at the same time I slice, or should I let it age a little more? I know there are lots of factors, so the ideal time will vary from batch to batch, but just looking to get a general idea or best practice. Thanks!