[Killer Whale]

Oddly, one hand looks like Thomas, the other not so much.

[Malcolm Armsteen]

[davidjay]

That definitely looks like Ozzy so possibly not drawn by Mr Thomas.

It's vaguely amusing as well. No further questions.

[soulboy]

Does Ozzy famously have a missing finger on one hand? Tony Iommi yes, but not Ozzy.

I can't see any random matter/anti-matter birds, hidden wildlife (where's the squirrel?) or super-detailed brickwork. Not a PT work in my opinion.