The ones sold at al-ikhsan are 100% authentic because nowadays adidas, nike, puma etc are outsourcing the kit factories at countries like china, indonesia, thailand.. heck, nike even got one at bangladesh as well and some authentic replica team kits are made there..

The ones sold at small stalls looks the same but is still not authentic if is not authentic.
You already have the KLFA logo there right? Or else, try to look for a better higher, bigger resolution picture of it. Or if possible look for the .ai format of that logo (if not possible, the one you have there can be used but the quality might not be 100% good).

Bring that image (copy it into your usb drive) to q-line and ask James to print one for you. You can later print it on the shirt. Walla...
Bukan season 2001-2002 bang, 2000-2001.. itu pun Man United saja
Actually only Man United wore PU namesets/patches in 2000-2001 season because for 1 season they were not sponsored by Chris Kay (now known as Sporting ID) but a defunct company called Metro Sports....

Bro, only EPL NNs have felt. International teams and European teams NNs after mid 90-s (cloth stitch era) are Pu only.

Almost impossible to find Valencia 0102 NNs now. Try eBay etc. but even if you find, I would advise against printing since it is almost certain to have expired. You may end up destroying both shirt and NNs.

Better try luck finding one per applied with NNs from eBay or classicfootballshirts.co.uk eg.