The dumbest mistake is viewing design as something you do at the end of the process to tidy up the mess as opposed to understanding its a day one issue and part of everything.

Advertising Disclosure: Please note that many links to retailers are affiliate links, which yields a commission for us. allauthor.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon sites.