Write out the pangram associated to the picture.
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG.
Remove any letter that appears for a second time or more.
Associate each letter in the above sequence to the corresponding letter of the alphabet that appears in that position to create a substitution cipher, so $$T \rightarrow A, H \rightarrow B, E \rightarrow C, Q \rightarrow D,\ldots $$
Use this cipher to decrypt the faded text in the image
Htsbe slhsvbvlvbxf, ixp hucbffups? Itv ektfeu
Basic substitution, for beginners? Fat chance
At this point, given the message, I may have hit a red herring but it might start others in the right direction.
My guess is that
We must decrypt the same text but using a different cipher.