I thought it would be a good idea to make a comprehensive list of NSFW things that I will and won't draw. Whenever anyone has a question I'll just refer them to this journal.
Specifically, these are kinks and situations where something is requested for things involving sex. One or two of these I wouldn't have trouble drawing if it doesn't involve lewdness.
DO NOT TRY TO ARGUE ABOUT THE FETISHES UNDER THE “NOPE” SECTION.

Oh myyy!
These are the things I'm into myself. I'll probably enjoy drawing these a lot.
-Multiple Orgasms
-Teasing
-Original Characters
-Females
-Cervical Penetration
-Vaginal sex (including any kind of foreplay concerning the vagina/clit)
-Internal Cumshot
-Vanilla Sex
-Extreme Tightness
-Consensual
-Cuddling
-Size Difference (within a certain margin, as long as it's not micro/macro)
-Larger Male (same caveat as Size Difference)
-Straight Stuff

Meh.
These are things I'm indifferent to or don't have much of an effect on me. No problems drawing these.
-Ahegao (as long as it doesn't get absolutely ridiculous like some hentai gets, with drool and snot dripping everywhere).
-Aphrodisiacs
-Condoms
-Breeding
-Polyamory
-Crotch Sniffing
-Flexibility/Contortionism
-Ice
-Heat/Rut
-Titfucking
-Toys
-BDSM (and related activities, including Dom/Sub play)
-Musk
-Foot Fetish (weird, but ok, whatever)
-Bulging (as in; where a particularly large member causes the receiver to get a small belly bulge).
-Tickling (although this is basically like teasing).
-Age difference (within a reasonable margin I'll find it acceptable. But it gets rather very uncomfortable if a 40 year old is busy with a 15 year old. As a rule of thumb, for younger characters under 20 make sure the age gap isn't larger than 5 years).
-Anal sex (including foreplay activities concerning the anus)
-Virginity
-Oral sex
-Unusual/Exotic cum
-Double penetration
-Knotting
-Tail Sex

Open for discussion.
These are ones that I prefer not to do, probably very likely wont do, but I'll at least hear you out on it. Although don't expect me to actually go through with it.
-Not Straight Stuff
-Food Play (This DOES NOT include overeating and getting fat)
-Canon Characters (in example; characters from a franchise. This includes fan characters).
-Disabilities (as long as they're not mental disabilities it's kinda ok).
-Femboys
- Gore/guro/gutting
-Multi Genitalia
-Multiple Breasts
-Tentacles
-Pregnancy
-Toons
-Udders
-Younger Characters (There is a very fine line here where it can easily end up in pedophilia)
-Quadrupeds (Not to be mistaken with ferals)
-Feral Animals (more specifically, those species from the Animalia kingdom that have not yet reached a sapient level of cognitive abilities. Refer to the Harkness Test)
-Fisting
-Cum Inflation.
-Triple or More Penetration
-Gangbang
-Adultery (Not to be mistaken with open relationships)
-Incest

NOPE!
These are ones I will never do under ANY circumstance.
-Anything Hyper.
-Anything Macro.
-Underaged/Pedophilia (Danish law is 15 years of age. Anything under this is no go)
-Cuntboys
-Futanari/Herms/Shemales
-Cock Fucking
-Docking
-Cum Bath
-Cum From Mouth or Nose (typical in Hentai where a character is filled with so much cum it starts to leak out of the mouth and/or nose)
-Cum Vomitting
-All the Way Through
-Living Insertions
-Nipple Insertions
-None Standard Penetration
-Sounding
-Urethra Play
-Diapers
-Rape
-STDs (like how the fuck is this even a fetish!?!)
-Zoophilia
-Vore (and all it's absolutely fucked up derivatives).
-Unbirth
-Belly/Navel Fucking
-Torture
-Inflation
-Growth
-Weight Gain
-Shrinking
-Transformation
-Alternative Pregnancy
-Anal Pregnancy
-Birthing
-Pain/Extreme Discomfort
-Extreme Pregnancy
-Male Pregnancy
-Oviposition
-Skat
-Watersports
-Obesity/Fat Characters