Starting to color within the lines

Here's a pic of one page inside Astrid's coloring book. You can see she's starting to color within the lines. I thought it was impressive for a 2 year old.

She loves to flip to this page. Once she sees the birthday cake she starts singing "Happy Birthday."

Her version goes something like this:

"Happy Birthday to you."

"Happy Birthday Astrid."

"Happy Birthday to you."

One lady heard her and asked, "Is it your birthday today?"

I responded, "No, but she just likes to sing Happy Birthday."