Follow these steps:
Mix the two types of flour. Add the olive oil and a pinch of salt. Do not overdo the salt because the dough becomes hard.
Add the water and when the dough begins to stick, knead energetically using the palm of your hand. If necessary, add water or flour.
Knead the dough energetically for at least 10 minutes until you obtain a smooth and soft consistency. Remember that your "ball" of dough is a living thing, so you must take care of it! :) Let the dough rest for half an hour wrapped in foil.
When the dough is ready, cut a piece and make a ball, then roll it out with a rolling pin to a thickness of 1 cm. With a pastry cutter or a sharp knife, cut into many thin strips of 1 cm and cover the rest of the dough with plastic wrap to keep it from drying.
Roll the dough with the palm of your hand and stretch it outward at the same time.
Once you have finished your pici, cover with some flour so that it does not stick to the others. Now boil some salted water, add your pici and cook them for about 5 minutes (when they rise to the surface, they are ready).
Some important notes while you prepare your pici:
1. It doesn't matter how long your pici are. The length does not affect the taste!
2. Pici should not be too thick. The correct size is more or less like the diameter of "bucatini" pasta.
3. If they break down while you're making them, don't worry! You will have some shorter pici. Pici are not perfect! They shouldn't be ;)