Self-reflections

Question

Copying is a form of praise (some say).
And I will be honest for a change; I am just a thief.
And as such:

• I am lazy (yellow)
• I (mis)interpret the rules whenever convenient. (red)
• Things got more complicated (for a thief, things are only easy on moonless nights)

That should not prevent you from decoding my message, especially if you know

[ the answer ]

Hint- If the direct approach is preferred

The title is in plural, it does not (only) refer to reflections of the thief, it refers to a multitude of reflections.

Hint- Following the story

"I (mis)interpret the rules" So the rules are made somewhere else. Probably rules about (letter) grids and/or 'self reflections'. were used by someone (before this puzzle was created). One could try to find those rules.

Extra hints

If you stand before a mirror, you are real, the mirror image is not + you see the mirror image, not yourself. So: find the original, remove the reflection. This may not be easy if there are multiple mirrors.

Start with self-reflections of the white squares, they have nothing special mentioned.

Note: I am not happy with my grid-deduction tag; it does not fit well, also 'letter' is not a very good fit, maybe enigmatic-puzzle (added by oAlt, thx!) should be the only tag. (Suggestions, probably after the puzzle is solved, are welcome.)

Answer 1

Final Grid:

MAKE S
ENSE O
F THE
GRIDS
BY CHA
NDA777

Rules:

Letters can only be flipped over their symmetrical axis:

1. H,I can be flipped to any square
2. S,N can be flipped along the diagonal axis
3. B,C,E,K can be flipped across the horizontal axis (up and down)
4. A can be flipped across the vertical axis (<->)
5. F,G can't be flipped at all (aren't symmetrical)

With the following exceptions:

1. Red Squares can be flipped to squares regardless of symmetry. That's how W -> M and L -> 7 (misinterpreted rules)
2. Yellow squares stay in place (lazy)

My only problem (and potentially a mistake/something I'm missing):

The original puzzle referenced is by chandanr777 not chanda777, so the nr is inexplicably gone. Might be explained by the thief part, but I'm not entirely sure.