2. Select a pattern you like to make into a mosaic. You can design one with your imagination or choose one available online. As a beginner, I suggest you may start from a simple pattern.
3. Draw or print out the pattern you need and place it on a flat surface. You can use a hammer or other tools to break glass tiles into pieces and make sure that the pieces of glass tiles are clean of any dirt. Then roughly lay them as the pattern.
4. According to the recommendations of the manufacturer, mix mortar and apply it to the base with a trowel or other tools. You shall put the glass tiles into the mortar before it dries out. Apply those glass tiles piece by piece from one corner of the pattern. And be sure that you have left enough space between pieces for grout. Clear away the extra mortar on the mosaic tiles after the mortar is congealed.
5. Mix the grout. There are many colors that you can choose to add into the grout and select one that will make your mosaic stand out. And apply it with a spatula to the spaces between the glass tiles until it fills the creases.