A few things that are always appreciated when going through the process of working together:

Send all items you would like to have done for the job. This makes estimations a lot easier to send you.
Any inspirations you have for your logos or project are a great way to get started. It makes the whole process a lot faster.
Never hesitate to ask any questions about the designs, I’m always happy to clarify for you, and ultimately, I want you to have the best design possible!