Logos. They’re little things that can make a big difference to your company. In this age of iPhone tiles and fractured attention, a great logo can help make your company — while a terrible one can break it.

However, too many founders try to design their own startup logo. I’ve seen the results — and they’re rarely pretty.

While designing your own startup logo might seem like a good way for a bootstrapping startup founder to save some money, it’s one of those things (like waxing and home electric work) that you should probably leave to the pros.

I spoke with two such professionals — Zaheer Dodhia, the CEO of DesignMantic and branding expert and logo designer Carolina Correa — about the common mistakes that companies make when it comes to star...