How do I know if she or he likes you? The direct approach

Yes, it's true I train in communication, but I dedicate this post to those seeking more direct approach. 

Feel free to comment.

When I was younger I used to employ different 'strategies' to try and establish this:

• Look for 'tells'
  • Which way are her feet pointing when she communicates with you
  • Are her wrists open (shows vulnerability)
  • Does she tilt her head slightly when she talks to you (affectionate)
  • Doe she touch you lightly 
  • How is messaging with you Vs her friends
  • Frequency of communication 
  • Type of communication? (Functional or moment by moment)
  • How does SHE respond 
    • When you touch her (elbow, arm, small of back)
  • How do you say 'hello and goodbye'

  These days.I go for an even smarter strategy:'So I like you. How do you feel about me?':p