Proper glaze thickness is important to get the right look.
Watch the layering video below.
With layerings you can get a lot of different looks.
Different Clay bodies (different types of clay) will give you different glaze colors.
Look at these examples. The glaze looks different on each clay body.
If you are using one glaze, put three heavy coats. If you layer two glazes, put two heavy layers of each. The Celadon and Shino glazes are unpredictable. You are welcome to use them, but be aware that it may not look like you think it will.