Step 1: Ingredients and Tools
Flavors you want
1 cup measure
1/4 cup measure
You can replace the milk with half and half for a creamier drink and also the ice cubes can be replaced with coffee cubes for a less watered down drink (especially if you leave it out for a bit.
Step 2: Measure and MIX!
It should have an nice, even, sludgy consistency.
Now for the fun part.
Add your flavorings! There are two types of flavorings you might want, sweeteners: "ice cream syrup, sugar, coffee syrups (get them at cash and carry)" and savory stuff: for instance peanut butter. You want a 1/2 cup of sweetener, so if you have two sweeteners use a 1/4 cup measure and if you want more than two then just make sure it adds up to 1/2 cup. Same with savory stuff. The measurements don't change if you only use sweeteners.
Blend until it's all well mixed.
Step 3: Fancy Stuff
Grab the cup in one hand at an angle and a syrup bottle in the other, spin the cup slowly while pouring the syrup. Move the cup from side to side as you pour the syrup until you're satisfied then pour you're frappe. Now you can put whipped cream on top and checker it with syrup if you want to.
Step 4: DRINK