These sound great. Your second sentence is gramatically correct, but I probably wouldn't say that.
Here are some other expressions you can use to convey joy and positive feelings, especially in relation to a new baby:
1. Brings a smile to my face - The new baby in my family brings a smile to my face.
2. Fills my heart with happiness - The new baby in my family fills my heart with happiness.
3. Makes my heart sing - The new baby in my family makes my heart sing.
4. Brightens my day - The new baby in my family brightens my day.
5. Brings sunshine into my life - The new baby in my family brings sunshine into my life.
6. Gives me a sense of wonder - The new baby in my family gives me a sense of wonder.
7. Is a ray of sunshine - The new baby in my family is a ray of sunshine.
8. Brings joy to my life - The new baby in my family brings joy to my life.
9. Makes everything feel right - The new baby in my family makes everything feel right.