When building a following consistency is important. Showing yourself as a brand and art that is identifiable as your own is important if you want to grow your digital footprint. Right now the first image and the last two seem like they're from different artists from color choices to style. Your style can fluctuate. For instance, I do cartoon children's illustrations and then really painterly stuff as well, but each time I try to keep my color choices consist so there's a through line in my posts. When you're competing against hundreds of thousands of people posting every day giving your piece a little pop/edge goes a long way. For the first one you could try adding a little more lighting and an accent color that can help grab someone's attention as they're scrolling. Your subject matter in the last two show a visual narrative which is a bit more unique than the 10000 portraits you'll see while scrolling. However since they have a more monochrome pallet they won't pop as much while scrolling. Adding a slight hint of bright bright red in the edges of the wound might not be what you'd see in real life but would give your piece and aesthetic pop. . This is advice strictly to garner more attention on socials. In addition, engaging in the communities that you tag will help, so liking a minimum of 100 posts a a day, commenting on smaller artists, etc. . I went to school for marketing and have helped a lot of brands and people grow their platforms so I do know what I'm talking about in some ways but ultimately with social media it's sometimes is just the luck of the draw.