Best schematic for driving 12V LED strips with TLC5940 with a possibility to PWM

Other Hardware LEDs and Multiplexing
6

So it should look like this?

No.

You need a base resistor in that PNP transistor.
The outputs of the TLC5940 are sink only. Therefore you need a pull up resistor to 5V.

I would also make R1 between 1K and 10K.