1. Can we create a sufficiently powerful telescope that allows us to see our own reflection perhaps from a body of water on a distant planet or at least our image from millions of lightyears ago?
2. Can gravitation lensing work in a daisy chain fashion by having multiple galaxies positioned ever so precisely to cause the light from our galaxy to travel in a semi-circle arc back to us?
1. No. We haven’t found large scale curvature of the universe yet. If it’s curved such that you could eventually see yourself from behind, it’s way more than 13 billion light years around.
I think you answered 2 first. Someone mentioned this link so I just wanted to post it again [0].
Regarding the first question why can't there be a planet let's say in Andromeda with a lake that would reflect back the light from our galaxy? That's only 2.5 million lightyears x 2.
2. Can gravitation lensing work in a daisy chain fashion by having multiple galaxies positioned ever so precisely to cause the light from our galaxy to travel in a semi-circle arc back to us?