You dont know about hier tier spells nor the spells of other blessed. You know what you have at your tier and that is all.
Compenents and etc are as written:
Somatic (S): Measured with precise movement of one's hands focused on ones Divine.
Verbal (V): Speaking words, phrases. Must speak in a strong voice focused on ones Divine.
Material (M): Physical substances or objects that disappear by the spell energies in the casting process focused on ones Divine. Some materials between Divines may overlap. This will be left to the character's to interpret unless explicitly stated in the spell.
Verbal states 'must speak in a strong voice'. No muttering. It says it right here what you should be doing.
Precise movement of ones hands can include your slate thing sure. But it says hands, and therefore I'd say doing something with both your hands is fine, including holding the slate you're doing the thing on.
Compenents and etc are as written:
Somatic (S): Measured with precise movement of one's hands focused on ones Divine.
Verbal (V): Speaking words, phrases. Must speak in a strong voice focused on ones Divine.
Material (M): Physical substances or objects that disappear by the spell energies in the casting process focused on ones Divine. Some materials between Divines may overlap. This will be left to the character's to interpret unless explicitly stated in the spell.
Verbal states 'must speak in a strong voice'. No muttering. It says it right here what you should be doing.
Precise movement of ones hands can include your slate thing sure. But it says hands, and therefore I'd say doing something with both your hands is fine, including holding the slate you're doing the thing on.