Can also not fish for the best buff, and instead RP that you messed the spell up some? "OH man, i didn't enunciate that word right, and it threw the spell off. This is what happens when you rush me! So impatient to slay evils. That will teach ya a lesson!"
"Damn it all! A finger cramp, right in the middle of a difficult somatic part of the spell! Clearly I need to take a break from adventuring, and hire a masseuse to work all of these kinks out!"
Some things like that, until you get to a high enough level for maximized, and empowered spells?
"Don't worry people, I've not done these motions thousands upon thousands of times, they have become more like breathing, and no cramps, or drunken slurring, will effect them. I have transcended!"
Should you have to? Maybe not, but perspective can change a lot of relative negatives if the effort is put forth.