Halloween // Texas Chainsaw Massacre 2003 Help

I’m building that costume, but need some help. The shirt im working on now, i soaked it in tea overnight and you can tell the difference but i dont think it’s dirty enough. What could I do?

apron im still deciding on. Should I make it out of a tarp or burlap? also does anyone have pointers on how to make one.

Lastly the pants, it’s hard to see if they’re work pants or just blue jeans