Lori:
If I were grading your circuit in my class, I would give you a C-.
1. D2-Q2 base circuit. You need a resistor to limit base current to a safe value. Depending on what the input voltage is, it could be ~ 1K...
2. RL2 is not even needed. You could trigger the 555 delay cycle without it. If you intend to keep it, you should have a snubber diode (1N400x, cathode to +12V) around it's coil.
3. C4 is too large. It will burn and pit RL2's contact unless you put a current-limiting resistor in series with the contacts. See 2 above. Another reason for getting rid of RL2.
4. R1/C3; the time constant is too short. This may be why your timer is unreliable (i.e. it fails to trigger sometimes).
5. VR1 should have a resistor in series with it to limit the peak inrush current. If you run the pot wiper near minimum resistance, you will likely blow up the pot.
6. D1/RL1. Diode should be 1N400x (1<=X<=7). No good reason for D1 to be in-series between pin 3 and the relay. Hook the top of the relay direct to pin3, and use the diode as a snubber; cathode to pin 3 and anode to gnd.
7. Probably need a snubber diode around the motor, too...
btw- my consulting rate is $250 per hour