Hi Huypham. Welcome to Armorama. I like your user name.
Your model is very nice. I especially like the first photo. The weathering looks great, and the LRAS lens came out great.
A couple of notes:
The rear can holders are for water and fuel cans. I have not seen them used for anything else. But one never knows I suppose. I would at least use straps for the cans on the left side, like you did for the boxes on the right side. The right front wheel ring is missing, although these can come off in real life.
The hollow back of the pack on the right is showing. You might want to reposition it. Also, the exhaust deflector should be a gunmetal color instead of the vehicle green. And I suggest having at least the end of the tow cable showing near the drum since this is where it is placed when not fully extended out to the front of the vehicle.
Here is a new vehicle with tape still wrapped around the cable end. With an operational vehicle the cable would merely hang down instead of being secured to the side.

But what I point out is minor. The model is very nice.
Bob