Hi there! If you are tagging your posts correctly, people should be able to see them when they visit the fandom or character tag. (Sometimes is tumblr’s fault that doesn’t show all the posts in the tag)
Don’t worry, it takes time, we all started like that. Maybe it’s too soon yet, but if you persevere or wait, you’ll start to see notes :)
Also, I’ll be more than happy to reblog your Hisoka related works!
EDIT: You guys should go check this blog ;)
1999 series vs 2011 series | Machi’s first appearance