Really like what I see - the quality of the artwork is wonderful; facial expressions are done right and the details on the ladies and rigging is perfect.
You need no improvement in art quality, but the storylines could use some work.
There's a lot of rip & tear\extreme material, as well as "natural vore" which is what you are doing now out there, but very little exploration of consentual, seductive or coercive styles that play out in a fun\joking way. Simple Green Bag, Vorister, Karicus and Voremantic do this well if you want an idea of that style. If you are looking for an untapped market that's it. If you are looking to do digestion scene's look at Eveara and "melty digestion" tags on various sites or things that indicate the passage of time and disposal.
Think along the lines of single sentance or single paragraph predicaments\peril scenarios that play out in a sexual or humiliating way, where the introduction is short and sweet, and the storyline doesn't play out more than 4-5 sets of 20-40 images each with 2-4 scenes each. Write down your ideas as you have them and storyboard.
Example:
-> Girl is captured by 2 cave slimes arguing about indigestion from the last girl that tasted awful; after the initial freak out, they settle on thoroughly tasting her and after arousal, a few orgasms, and comments like "Too Salty, Too Sweet, Too Sour", decide to release her. She however is not done and protests, so one of the slimes gobbles her down, gives her one heck of a tounging, then swallows and mentions to the other horrified slime "You know I think they taste better after a good tounging, I think we should do this more often."
-> Snake is fed a tied up snacrifice feet first. Snacrifice decides to break free and get out, snake begins to probe her underparts with enthusiasm as she tries to get away. Snake bunches up it's neck at her feet and when she orgasms, it swallows her up to her neck i one go, then allows her to crawl out most of the way before sucking down and repeating. After an hour or two of this and a lot of talk, she's exhausted, and gets swallowed in one gulp.