I'm using only graphite for this piece, which I may or may not enter in a competition later on, but I haven't decided if I will use some ink in it or not. Once I'm further along I'll make that decision. It's really early on in the process, but I wanted to post it for you guys to comment.
This is something I was working on for a package design that wraps around a box. The first image is the very beginning of the final clean draft that was done on tracing paper (later to be scanned and edited).
All of the work is done in ink, and on tracing paper (which was placed over my initial rough sketches).