Wet mounting is a mounting process, which used usually to study the components of liquid. Most liquids will form a few bubbles and you should learn to recognize these.

Put a small drop of a liquid laundry detergent on a slide.

With the use of narrow edge of a second slide, push the drop lengthwise across the first slide to spread it, then a drop cover gently in the center of the smear you have made.
The slide should be wet only on the inside. Focus on the slide and move it back and forth. All those large and small circles with pearly centers and thick, dark outlines are air bubbles.

For a test that will help you recognize them, turn your mirror aside so no bottom light reaches the slide. Under top lighting, the background liquid will look dark and the air bubbles will appear as brightly gleaming rings.

You could also use the milk. Again, you will see quite a few air bubbles but further, your side will be covered with small rounded shapes floating in clear liquid. These shapes are globules of fat that give milk its white color.

Any knitted garment, whether factory or handmade, is composed of a long, continuous filament, or thread, looped together in interlocking rows. Most underwear and stockings are made this way. However, the woven fabric consists of two threads. One set runs lengthwise (the warp), and the other from side to side (the wool). This basic formula allows for hundreds of different patterns and textures.
Look at several kinds of textiles. Try to spread a certain fabric (may it be a fine cotton handkerchief, a T-shirt, a nylon stocking, and a well torn terry towel) if you cannot cut and mount it, right across the stage of microscope. Materials that are thin enough for the light to penetrate from below the stage will do best in experiment. If the cloth is translucent, you will have to rely entirely on light reflected from the surface, however it will not reveal the secrets of the texture.
You could also use yarns and threads as well as unprocessed fibers such as hair and feathers.