gabrielwoj
It looks like that image was never uploaded to Derpibooru.
Wow, that was quick, thank you very much! Something told me that it could have been this artist, and I even tried looking up tags with the artist’s name on the search syntax, thinking that all of xwhitedreamsx’s art were already uploaded on Derpi.
I guess feel free to upload it to here, in case it wasn’t marked as “Do-Not-Post”. You were the one who found the art, so it would make more sense for you to upload, that is, if you want, of course. Thank you once again.