I'm not happy about the time limit; but I would be okay with it if the time limit was optional. If there was a way to disable that for players who find that annoying, like myself, then you could keep a feel for a challenge without driving people away. Otherwise, the puzzle is fine. I actually really like the context of the pieces being difficult to see because it's dark in the area in which it is being solved.

DAYUMM

You're so creative!! I admit I was a bit confused at first when i saw puzzle pieces and a black background, but that's actually a great idea! Keep up the good work!

Hugs~

First of all welcome back. :) 
How nice that your ceilings are back in one piece. 

Thanks for the "demo" on the puzzle. That was very helpful ;)
I like it and it is good to finish despite the "darkness".
However, I wouldn't put a time limit on it like that with more pieces. That might be a bit too "annoying" for one or the other, since especially the parts with the black border (on black) are a bit "invisible".

I have one more suggestion, although I suspect this may be difficult for you to implement. I would find it more authentic if they were not puzzle pieces, but real fragments of a destroyed mirror, to be put back into the frame of the mirror, so to speak. 

Don't overthink it too much ;) 
I'm sure everything you present us will be wonderful. 

<3 Yanonako

I think it's pretty good for an early puzzle without time limit. definitely gives right feel for doing a puzzle in a dark place. far as I can see from the image it's quite dark, but doesn't seem like it's too dark to be able to complete.

as for everything else, don't over think it. it's usually when you stress yourself out over something like that, that there are generally mistakes. when I'm having difficulty with a post when Roleplaying with a friend, I find it's easier to settle and make progress when I take a moment to meditate on the scene, and the characters involved. closing your eyes for a moment and letting everything unfold in your mind, before trying to put it onto paper/word doc/etc. can be enlightening, and sometimes there's unexpected inspiration to be found. otherwise it might be good to get outside help; like if you have a writing buddy you enjoy working with, who will take on a role you're struggling with. reading through how someone else aproaches the same character might give new insight into your own approach.

I hope that helps a little! I'm glad things are going better now! just remember to take breaks, and enjoy yourself. ^_^

Hard to say without playing it. Maybe make the background a really dark-brown or whatever colour the room for the most part has to make the dark-gray puzzle pieces stick out a bit better?

I'm so glad everything was repaired and you are back in your groove! Welcome back! :) As for the puzzle, it doesn't look too dark to me, but it's hard to say without actually trying it. I definitely think you should leave it as it is to set the tone and pace you are aiming for. However, if you think it may be too hard, you could add a setting to maybe auto-complete the puzzle for players that are struggling with it?

hi, SweetChiel, love your works <3
We wouldn't know if this mini game is too hard until we try it. i think you should leave it the way you intended, but maybe add a short memo before puzzle. like "hey guys ahead will be important\time-limited feature, maybe you want to save or q.save". it may ruin a bit a surprise effect when player dont expect to solve a puzzle within a limited time, but will be easier for you to create atmosphere you want and for player to see what will happen in both cases (succeed and fail the puzzle).
Hope i conveyed the idea properly <3 English is not my native language, although i understand it perfectly fine, grammar is not my strong suit