I do not have a tumblr account, but I have a Twitter account. I do not know how to use it so I will put a link here. It is only Japanese, but if you do not mind please.
https://twitter.com/BluedaysSky?p=i
I sometimes post something that I posted here to Deviantart. A summary of the image is in pixiv.
https://touch.pixiv.net/member.php?id=27436778