I often try and have a design ready within 10-12 days. However, shorter deadlines (1-2 days) can be considered if need be.

Having a sketch will definitely help getting closer to what you have in mind; although this is not strictly necessary.

The minimum I need to get started is the abstract of the paper. If there are complex ideas or jargon, then I may ask for a plain English explanation (and a sketch) to make sure the concept and idea are correctly captured by the design.

It is up to you. The process is normally fast and simple and I find that clients like to keep things informal.

Once we have a design made for you it is yours. You can use it in any form or media.

After finalizing the project you will receive an electronic invoice. It will have a link if you wish to pay by card. Wire transfer is an option that some universities prefer and is also available.

At the end of the project, I will send you all the necessary files that are requested by the given journal; usually these are .pdf, .png, .tiff, a and .jpg, at the correct size and resolution. 

I can work on any scientific journal cover design. My background is in materials science and related areas (chemistry and physics); however, I often work on designs that are in the domain of the life sciences and medicine. 

I do Table of Content (TOC) entries. Thesis covers, book covers and images for media release is also something I do.