Always contemplate variations in size, proportion, and color.
Make sure that core elements are visible when reproduced in greyscale or black & white.
Test your design choices with your target audience to flag similarities or confusion.
Make sure that there is nothing openly or implicitly offensive in your logo’s shapes or colors.
Colors should be specified in every major system in order to preserve uniformity.
Would the average viewer be able to understand the design elements you’re presenting?
Infuse your logo with the aesthetic style associated with your products.
Avoid designing a brand identity based on trends alone.
Figure out which emotions are salient during consumption and reflect those in your identity.
Have vector files on hand when you submit your logo files to designers & partners.