Quote

Pseudo newb here. What is the actual process of creating an OP_RETURN message? Can I do it with Armory? If not, how then?

If you can not do it yourself - you do not need it.
Please, do not waste blockchain space.

Quote

Finally, is there a way in Blockchain.info to see an OP_RETURN message? Again, if not, then how?

Of course.
Let us see for example https://blockchain.info/tx/da6fcac032a07c6cdd01397948cc05d37c84ee79a42d78df58b29bb389eafff4?show_adv=true
In the bottom of this page
OP_RETURN 5354414d5044232357a5f6876cea640c14ab43af02f961b1cf8d0817a8885a76f222eeebc74791a 2
Are you able to read and understand data encoded in hex? No?

How very ignorant. If you don't know what it is and want to learn then you have to start somewhere.

We all knew nothing at one point in time...

Thank you. I'm still interested in learning how to create an OP_RETURN message (with Armory or other available tools).