我家 - My family

我家有5人。爸爸，妈妈，姐姐，妹妹 和 我。
Wǒ jiā yǒu <strike>kǒu</strike> wǔ rén. Bàba、māma、jiě jie、mèimei hé wǒ。
My family has 5 members. Dad, mum, older sister, younger sister and me.

我爸爸是救护车司机。我妈妈是护士。
Wǒ bàba shì jiù​hù​chē​ sī​jī​. Wǒ māma shì hùshi.
My father is an ambulance driver. My mother is a nurse.

Well,I think actually"我家有5人“ can already be understood by Chinese people,but "我家有5个人" or "我家有5口人” can be better.  "我的家“ is also the same.  :)

我的家 - My family

我家有五口人。爸爸、妈妈、姐姐、妹妹 和 我。
Wǒ jiā yǒu wǔ kǒu rén. Bàba、māma、jiě jie、mèimei hé wǒ。
My family has  5 members. Dad, mum, older sister, younger sister and me.

我（的）爸爸是救护车司机。我（的）妈妈是护士。
Wǒ bàba shì jiù​hù​chē​ sī​jī​. Wǒ māma shì hùshi.
My father is an ambulance driver. My mother is a nurse.

good job! There are only some little tiny things to correct , come on , you will be better.

写的很好，只有一些很小的地方需要修改，加油，你会写的更好的！
（xǐe de hěn hao,zhǐ yǒu yī xīe hěn xǐao de dì fang xū yào xīu gǎi, jiā yóu ,nǐ huì xǐe de gèng hǎo de !）

我家 - My family

我家有5个人。爸爸，妈妈，姐姐，妹妹 和 我。
Wǒ jiā yǒu kǒu gè rén. Bàba、māma、jiě jie、mèimei hé wǒ。
My family has 5 members. Dad, mum, older sister, younger sister and me.

我爸爸是救护车司机。我妈妈是护士。
Wǒ bàba shì jiù​hù​chē​ sī​jī​. Wǒ māma shì hùshi.
My father is an ambulance driver. My mother is a nurse.