Oh - something that I encourage players to do in my games - feel free to describe the "casting effects" of your spells (i.e. what the spells look like, feel like, smell like, etc.) and feel free to "angle" these spell casting effects to suit your character (for instance, an endure elements spell cast by a cleric of Pelor would likely look, sound, feel and smell very differently than the same spell cast by a priest of a demonic cult). The only caveat to this is where the spell might do damage or affect and unwilling target - obviously, you should feel free to describe the *casting* of the spell, but once it is cast, I take over, but I will be sure and maintain consistency with the spell description.
For instance, you might post:
Kiera whispered a prayer between clenched teeth as the beholder bore down upon her. Suddenly, her face was awash with divine light as the clouds above her parted with what sounded light the long-off fanfare of heavenly trumpets. The smell of a freshly mowed meadow in the height of summer filled the air as the clouds grew red with the omnious portent of her flame strike.
Then I would respond:
The clouds ripped apart with what could only be divine fury and a deafening crack as a column of white-hot light spilled down from the sky, totally engulfing the beholder. Sunlight seemingly from the eye of Pelor himself stabbed through the abomination's core, white hot flames tinged with red hungrily licking at its spherical form. Suddenly, the light was gone, leaving dancing motes before the eyes of all that beheld it and a warm, soothing sensation radiated out from where only moments before stood a pillar of pure conflagration.
The beholder, now little more than a pile of smoldering slag and a few charred and broken eyestalks, was no more...
'Zat cool with everybody?