This is one way of doing it, but since then, I've written over 250,000 words on several different stories, and I think there's a better way to make characters seem alive.
The character needs to be both the same and different on the inside, not just in their physical mannerisms or appearance.
Making a character the same as the reader in their beliefs, values, ideas, thought process, etc. will draw the attention of the reader. They will relate to the character.
But making the character different in some ways from the reader will make the reader even more interested.
Remember, these are the opinions of an unpublished writer. I hope my characters are memorable, relatable, and interesting.
On another note, I'm currently reading a book about characterization written by a psychology expert. The book suggests that the writer needs to get in touch with his/herself before they can write deep characters.
Is this true? What do you think?