Tracy Jennifer Butler is the artist and author responsible for the creation of Lackadaisy. When she's not working on Lackadaisy (I know, right?) she works as a 2D and 3D artist on stuff that has nothing to do with Lackadaisy. You can find out more about that by looking it up on her FAQ. Tracy has worked with digital art for over 10 years.
In regards to her professional history-
I worked as a orthodontic lab assistant/clinician from age 14 up through my college freshman year. In the likelihood you're asking about art related jobs, though, my first paid jobs were sporadic freelance illustration gigs - some for table top RPGs, but mostly for individuals who simply wanted some artwork done. I was about 16 or 17 when I started doing that.—Tracy, 
Tracy has stated that among her favorite things to draw with regards to Lackadaisy are, "Rocky's over-zealous grin, Freckle's guileless bug eyes, Mitzi's silent film era face, Viktor's glare, and Wick's varyingly unctuous or affable half-smile. =P"
With regards to her writing process, Tracy has said-
I jot down copious notes and ideas and gradually whittle it down, throwing most of it away, putting a few stray ideas aside for mini-comics, and keeping what little of it makes sense and gets me where I’m trying to go with the story and character arcs. Then I begin jigsawing it together to establish a broad shape for it all. Once there’s a basic form, I try to refine it so that there’s something bearing a resemblance to storytelling rhythm to it. Sometimes, thematic patterns begin to emerge from the camouflage of inchoate ideas, so I backtrack and play them up a bit to help keep everything tied together as more than just a chronology of events. It helps me make sense of it all too. Then I work out where chapter breaks (or scene changes) fit in. The result is a sort of outline consisting of a few sentences or a paragraph to describe each intended chapter. The outline is still very much liable to be edited and re-ordered, but it allows me to narrow down my focus to individual chapters and write a draft of a script for that segment. I do a lot of the research at that phase too. Dialogue generally goes through multiple rewrites as I thumbnail and then draw out panels. Right up until I’m finished with a set of pages, some things are subject to change. Panels get replaced, redrawn or rearranged. Information gets added or cut out if I simply can’t justify its inclusion, and I take at least one last pass at editing the dialogue, usually (but not always successfully) with the intent to pare it down.—Tracy, 
In the comic
Tracy has created a fictionalized version of herself. In several of the Previews, Tracy interviews various Lackdaisy characters, attempting to learn the answers to questions that have been posed to her by fans of the comic.