Holstaur from Monster girl getting milked

I usually don't comment to these kinds of...well...more fetish arts..

But from an artist to another it's not necessarily a bad piece, many things work well, but I still suggest looking for references and tutorials considering how breasts naturally work in general. Because this looks very unnatural.

I understand they're supposed to be unnaturally huge, but even then breasts aren't circles, unless silicone or with push-up bras/etc making them appear so.