This presentation is also sold as part of part of a pack of subject pronoun and -ar verb activities found here: https://www.teacherspayteachers.com/Product/Spanish-1-Subject-Pronouns-AR-Verb-Powerpoints-Activities-Pack-Realidades-2A-1570998
This presentation briefly explains what a subject pronoun is, then presents the subject pronouns in English along with their Spanish equivalents and some helpful images. I emphasize not only the words, but also the idea of 1st person being "self", 2nd person being "to" and 3rd person being "about". I have found this to be helpful to my students.
Also included in the presentation are a few practice slides where students determine which pronoun is appropriate for a given image.
It works well for my students!