There are definitely customers, and men who like small breasts - I am an A cup myself. Yes I have a nice ass, but many ask to see my breasts, they specifically ask and or tell me to remove my bra etc. They want to see nipples! Use it as a USP, work it, work everything to create your package. Have a look at the photos on my SM profile, any of my presences to see how I show my boobs, fair enough I am known for my legs but I like to show off pretty bras, lace, sheer, satin, silk all look fabulous on small breasts just as they do larger.
Regards twitter, follow others who you align with, interact, any bot messages I just delete or tell them outright "I do not want your photos" - mostly I ignore. Build up a network, you now have another follower.