tea. there's a lot of tea involved in my writing. I even named one of my characters after a flavor of tea (Violette).
Hmmm, I would say fluffy hairstyles, the good old small stripes in the nose and lots and lots of rim light details and light effects.
Also lots of close ups on eyes/hands to catch subtle expressions.
My characters tend to be expanded upon aspects of my own personality, So a few lines of my internal monologue will occasionally sneak into dialogue, sometimes without me realizing it. Narrator characters are especially prone to this.
Whenever I draw landscapes or grassy fields I love drawing overhanging, cylindrical rock formations 
If I'm making a large grass field I like to spread some red flowers across it to create some visual interest. As well as some particles and fairy like creatures close to the ground 
. Might not be a signature thing, but it is something I enjoy adding to create some more visual interest in some empty areas 
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You can see these in my latest cover I made for my comic:
When I do background things like signs, I like to be as vague as possible. For example, instead of a “help wanted” sign it just says “help.” Or a street sign that just says “no” without specifying what you shouldn’t be doing. Just my sense of humor I guess :3
Ah, the burger thing is super cute! 
I don't write a comic, but I do write a New Gods novel that I make art for. I would say my signature writing thing is the usage of "gross" horror words combined with ethereal descriptions to paint a mental picture of the industrial hell-world I'm writing about. And for my art, definitely red cyberpunk cityscapes and alien/demon people. Oh and omegas lol! None of these things are unique but the way I combine them to write about something I adore is unique to me, I would say. 
Stellar moved through the murmuring glow until she was in a crescent of shadows. A hot breeze filtered through the area whipping Stellar’s hair and dress into a hallucinatory spiral. Beneath her, terrain groaned mechanically. She reached out and grabbed a nearby pole when the planet’s surface shuddered momentarily. Due to the geo-active nature of Apokolips’ internal structure, such disruptions were commonplace.
(from ch.13)
Demilunes clawed skyward; saliva made of darkness seemed to reach for her. Even to elites, the Royal Palace was a menacing zone. Stellar gripped the hem of her dress with sweaty hands. She hadn’t found Tilde and no longer had time to search. Stellar peeked at luminescent lava streaming near decorative towers. She visited the Palace many times before, but it never ceased to set her on edge. That morning was particularly sickening due to her nightly misadventure. Ambient pain enveloped her in layers of mental sediment.
(from ch.14)
I have three signature characters who always appear in every story. Sometimes, their appearances are more subtle than others.
A pun connoisseur? I love puns. They're getting more and more abundant in my comic xD Sometimes the audience can tell a bit more than we can. Perhaps a commentor has mentioned something that they feel is unique to your work?
I think my signature thing is how cheesy or sentimental my episodes and characters are because I tend to get the cheesiest ideas and just run with them. I feel like I am getting more and more cheesy as I continue to make episodes xD Another thing is probably the O-surprised eyes, I make those a lot, like more than the daily recommended amount on the prescription bottle kind of a lot xD
Puns make the world go round XD
After diving a bit, one comment did talk about my art style being unique and stylistic.
Whether it's my comic or fanfics I've written I've noticed that my protagonists are always a little dumb and oblivious 
i guess that's the only way i know how to create 'humor"...
Pastels and rainbows. No, I'm not kidding, I use lots of pastels and rainbows in my work. Needless to say, my novel and comic both are tragedies and I sure love to not show that part in my art. XD
Hmmmmmmm I dunno really xD I've heard some people point out that they like the photoshop brush I use for sketching and inking, which is just a hard round brush that I fiddled with a little bit to add some slight variation/texture. Mostly because I don't like the perfectly hard edge of the regular hard round brush and wanted a look closer to traditional inks with my digital line work.
It's kinda hard to see at the scale most of my comic characters are at, but you can kinda see the effect on the panel outlines which I stroke with the same brush:
Other than that... maybe just a slightly higher than average amount of backgrounds? I don't think it's that uncommon for action/adventure comics, but for example in the pair of 20-ish panel each episodes that i'm working on right now, I think only like 5/40ish panels don't have bgs drawn in. So yey, backgrounds lol
