Remote wiring help :-)

Hi, Could one of you marvels please help out on this, im a total noob. Using a YK04 receiver. STP3NF061 mosfet, with 100k resistor. Would like to power 2 motors via remote. Think have one sorted but unsure on adding 2nd one, especially the source side? Again any help much appreciated. Ahh sorry for the drawing, clueless on electrical symbols...

You need to connect the negative of the motor supply (and the mosfet source terminals) to the negative of the logic supply.
The positive sides can be different voltages, but the 0V / "common", the negative of each power source, needs to be directly connected together, no resistor.

If you need a resistor in series with a motor to limit speed or torque, that would normally go either between motor power and motor positive, or motor negative and FET drain.