I normally use my large grinder of my Prithi mixer and do the grinding in two trips.
The amount of the tahini paste,cumin and paprika is totally upto your like. We like to have the tahini taste so we add more.
For a slightly tangy version, add the juice of a lime at the end and mix well.
If you are using tinned chickpeas, you can use raw garlic while grinding. It doesn't make much different to taste.