MDmSf3o

Up: VoPcZBU20I4 imgur/com/MDmSf3o

Bottom
Associate the tens to the crosses and the units to the squares.

To ASCII:

To get the final character, do a similar algorithm on the top-left:

AR9uTe6

Center
Follow the numbers written in cells of (MDmSf3o) from 1 to 7. Write all of their coordinates (first coordinate - number of cells in short row from the left (begins with zero), second coordinate - number of cells in long row from the above (also begins with zero)) in row. After that, turn them into ASCII. Voila - faot6yB as link to Imgur.