I'm not an experienced brewer... My first batch is seven days old and fermenting in the closet... But I am a marketer who has created a handful of brands.
I'll share with you a simple branding exercise that I use...
Think of some of the words that describe what you want the brand to represent or portray...
Eg. Delicious, strong, youthful, etc.
Create a couple of lists of words that are synonymous with those core terms... Have a separate list for nouns and adjectives (use thesaurus.com) ... Let yout mind wander with word choices.
Eg. Nouns for 'delicious'... Candy, chocolate, filet mignon, etc.
Eg. Adjectives for 'strong' ... Burly, hardy, massive, fierce, potent, etc.
Finally, go back to the lists and start combining the terms. Look for some word combinations or phrases...
Eg. Hardy Mignon, Fierce Candy, etc.
You can even combine words to create new words... The process helps to crystallize your thoughts on the brand as well as create a starting point for naming.