The Making of Under Lock & Key, page 2 (Patreon)

Since the process is the same for every page, I won't show the flat-colored version for every page, unless I feel it shows something significant. :-) 

Here, I'd like to emphasise the sketch phase. Take a close look at the characters' faces. They're quite wobbly, from one panel to the next.
Delilah isn't a new character, but I haven't drawn her often yet. The other girl doesn't have a name yet in the comic, but in my mind, she's called Roxy. :-D I've never drawn her before.

I wanted something other than the typical, pretty, girl next door, that I usually draw. Jenny is like that. Delilah also a little. Roxy is a little more alternative. A little goth. She's also slightly chubbier than either of the other girls. 

Anyway, I had very little practice drawing either girl, so the faces look off. That's okay. Usually, I try to sketch the WHOLE chapter, before lining and coloring. By the time I'm at the end of the chapter, I have way more practice drawing the characters, and I can fix the mistakes in lining. So, wobbly faces like this are easily rectified. :-)