Listening skill are vital for your learners. Of the ‘four skills,’ listening is by far the most frequently used. Listening and speaking are often together, but beginners, especially non-literate ones, should be given more listening than speaking practice.
It’s important to speak as close natural speed as possible, although with beginners some slowing is usually necessary. Without reducing your speaking speed, you can make your language easier to comprehend by simplifying your vocabulary, using shorter sentences, and increasing the number and length of pauses in your speech.