These are great updates. I really loved the extra detail around the Brand Essence – Key Descriptive Words. And I think this additional explanation will also help you to get a really good visualization of your brand too.
For colors – just highlight if these are mandatory? Alternatively, you may like to highlight that you like a natural warm earthy color palette to reflect sunsets and oceans such as –> Sage or Turquoise (like ocean water) and Orange, red, yellow/gold (like a sunset), BUT you are open to creative design suggestions which will reflect your core Brand Essence.
After you consider these points, update your Creative brief and whizz it off to 99-designs! And let the contest begin 🙂