Your soil is bad, you should use 4 inch pots with saucers for drainage to start the seeds.Use promix type of soil or potting seedling mix, yours soil as too much organic matter in it. dont cover the pots with dome or saran wrap or foil. and keep your temps in betwen 80 and 85 f. Ans spray mist soil dont water it using a watering can it will make the seeds go to the bottom of the pots.and the skin on the seedlings can be removed if it does not come off on it's own.