How do you be a mom as a stranger

My so and I want to adopt a 5/6 year old within the next couple years.

I’m kinda freaking out.

How do you be a mom to a child who doesn’t know you? I forgot to mention we have no children and don’t plan to produce any. We just want to adopt.

I am thinking wayyyy far ahead to bringing the child home for the first time and showing him his or her bedroom and being like “hi I’m your mom and this is your house now.” Yeah I don’t think I’ve ever been more worried about anything in my life. Even though we have years to prepare. This child could technically be being born right now. We plan to adopt out of the system and I’ve already been in contact with them talking about it but we want to wait until we are more stable and prepared but there are definitely children up for adoption. Yes I do want this, more than anything and I think that’s why I’m so nervous. I want to do it RIGHT NOW but we really need more time. We need a bigger house or he or she won’t have their own room which is a requirement to even have a child placed with you.

Do I even call myself mom? What do I have this child call me?