are the articles correct?..please, help!

[Len]

The last chapters of the book are really well-done: you will find there some good advice for dealing with Generation Y in real life and some interesting info about evolution of the soft skills necessary for management nowadays.

[Joe]

All ok

[Len]

I'm so happy! thank you so much, you made my day

[Tukanja]

Wouldn't it have been said 'You've made my day!',instead of 'You made my day', would it?

[Joe]

Wouldn't it have been said 'You've made my day!', instead of 'You made my day', would it?

Both are possible. BrE tends to use the present perfect (You've made my day).

[Tukanja]

Thank you.