How to make a beautiful homemade bread fofinho

Revenue.
Sponge 1: First step
500ml of mono milk
10g of dry yeast
50g of sugar (3 tablespoons)
75g of all-purpose flour (3 tablespoons) mix all together and let stand for 15 minutes.
mass 2: second part
800kg of wheat flour
100g of margarine (3 tablespoons)
100g of sugar (1/2 cup)
2 eggs
30 ml of Oil (3 tablespoons)
and an egg yolk to pickle
Then mix everything and let it settle for 40 minutes.
and mold. oven time 40 minutes at 200ºC