The third jpg shows five LEDs in series for the segments, and one for the digital point.
I'm going to assume you use the RED displays, where the LEDs have a Vf of 2 to 2.4volt and a max current of 20mA.
You can safely drop the 220ohm segment resistors to 100ohm if you want more brightness.
That will give (12volt supply - 5*~2.2volt LED) / (100ohm + 15ohm) = ~9mA LED current.
The DP will have the same brightness with a (12volt - 2.2volt LED) / ~0.009A = ~1088ohm = 1k resistor.
Leo..