Review of how to form "k": Press the back of your tongue against the back of your throat and hold your breath. Then, force air out of your mouth in a little explosion. This is an unvoiced sound, so you will not hear your voice when you say it. You must hear a little puff of air after you say this sound, otherwise it will sound like the voiced "g" sound.
Learn now to pronounce the "k" sound
Click on the sound below that you would like to practice.