Hi Liana,
I followed the advice of just leaving it alone and it worked!
Here's exactly what I did:
Left in Sphagnum moss baggie until taproot was about 0.5cm long.
Planted about 1cm deep in soil mix 20% potting soil, 80% coarse sand.
Waited about a week for seed to emerge from soil.
Day 1: (starting from the seed emerging from the soil) 2 lateral cuts down the length of the seed coat. Very shallow cuts as not to damage the inside.
Day 2: removed a small amount of the seed coat near where the tap root emerged.
Day 3: attempted to remove more of the seed coat near the tap root. I was afraid of damaging the seedling, so I stopped the cut and put up the post above asking for advice.
Day 4: Mist seed with water, once in A.M. once in P.M.
Day 5,6,7,8: same as day 4
Day 9: I was worried the seedling was going to perish if it was in the coating any longer. I went to make a small cut and as soon as I touched the razor to the coat, it was loose enough that it just fell off.
Hcc