Where should a woman look in Salaah

From your book I understood that before and during first takbeer, a woman must look in front of her and only bend her head to look at sajda after takbeer. I look at a wall in my room because it is in front of me, is it correct? Should the head be bent slightly or doesn’t matter the angle? If starting salah looking at sajda place during first takbeer by mistake, does it break salah, require sajda-sawh or nothing of this?