What a beauty!
Just look at the build quality of the Tejas! It's superb, as good as the Typhoon and Rafale. Also clear to see that it uses a VERY high degree of composites, again one of the highest amongst all 4th gen fighters.
Having personally seen multiple Tejas LSPs from up close, the build quality was good, but it has improved a few notches after going into series production.
Tejas Mk1 with 2 Derby BVRAAMs, 2 R-73Es and 2 drop tanks undergoing some trial. This is a LSP fighter, not a Series Production fighter with the Squadrons.