これらの表現は自然ですか？教えてください！
Are these expressions natural/correct? If not, I'd be really grateful if you could help me.


・I love you so I want you to have the happiest birthday ever!

・I even made these cute decorations for you!

・"It's still too early for this to end!"

・Sorry that I scared you! But the next one is a blast!

・With all my heart, here are some dishes I’ve cooked!

・I can't guarantee the taste, but... look! I did my best!

・I’ve never met a person who is as sweet as you are

・Hey, something is hiding here… Open it!

・These are all yours!

・You are my very best friend so I'll make you happy

・Come to me! Sit next to me!

・How was that? I did my best so I hope you like it!
I really want to keep making you the happiest person in the world!

・Thank you for being you and being mine!