Answer to: Touch screen gone black when fixing screenWhen you took off the sceen you might have damaged the connection to the display. check that cable that was between the screen and the rest of the body when you removed the glass.
Answer to: Is the LCD the problem or could it be something else?The photo looks fine to me, maybe the ambient light sensor reduced the brightness after the fall? Try comparing your phone to a friends; You may be over analyzing this. The screen shot may only be capturing a snapshot of what the processor is rendering (outputting), and not a picture of the screen. If so then the screen shot wouldn't help with this however I'm not sure about this and I cant find any specific information about how a screen shot works.
Answer to: Who can fix my phone?Heyyyy I have a blu phone. Wonderful little things for the price. Whats not so wonderful is some of their phones don't have a back to take off or any other place where you can start prying it open. The screen is probably done in with adhesives which can make for a troublesome repair not to mention that the company isnt all that common in the market- my point being finding parts would be very difficult to come by. professional repair would be expensive and they might be hesitant to do this phone as there is probably a lack of documentation for opening it. I haven't looked into the specifics but try doing a couple google searches. Your phone might be RIP.
Answer to: My New 3DS XL fell in snow, is there a fix?I would try redownloading the game onto another microSD card or the on board memory itself. Nothing sounds certain yet so assess the damages and narrow it down for now~