So, I set up the colony on Monday, however it failed by Tuesday I revamped it on Tuesday, too and I already have my first cocoons More are to come. This time I haven't failed. It'd be pretty useless showing you pictures, since the cocoons are really well hidden and very small, and the worms are burrowed deep in the soil. It's got a few centimeters of moist soil in it, the 'bin' is my Axolotl's old temporary home and it's got a ton of dead leaves and cracked eggshells in there.
I had to scrap the whole thing Hopefully i'm going to revamp it (again) today with even more soil that doesn't have slugs in it.