John Rowlen and John: Thanks for the positive feedback.. Yes, I always spend some time trying to find color photos of the subject cars. I was surprised that I couldn't locate many decent photos of H21a hoppers. Also watched some PRR movies on youtube...
John Rowlen: I'd suggest if you're just starting out ..... work with paint washes, made up of inexpensive Acrylic Latex Craft paints mixed with water and a drop or two of alcohol to act as a "wetting agent" to stop beading... I have been mixing mine by counting drops and generally 30% paint, 70% water is a good place to start.
This diluted Paint Wash with Burnt Umber (50%) and Nutmeg Brown (Apple Barrel #20521E) 50% plus water is all I did on these hoppers... So I mixed like 5 drops of each paint color, then added about 20 to 25 drops of water. The only photos I would end up showing is the original new car, and the finished product.... It was one step.... On 1 or two of them I may have gone back and hit a few areas with a 2nd coat of the same wash in "spot" areas... Then I just sealed them... No powders, no airbrush, no india ink,,,,
I'd get just the basic colors for weathering, burnt umber, a medium brown ( like the Nutmeg brown mentioned above), raw sienna, white and black. Mix it in small quantities and go to it..... If you do something you don't care for, you can wash more than 90% of it off with dish washing soap, water and a toothbrush and start over.
After the wash dries, I seal it with Dull Coat and then decide whether I am going to do more with Pan Pastels, or the small air brush. If you have an old cheap freight car around, use it as a test model, try one color wash on one side, and a darker or ligther wash on the ends or the other side... It really doesn't take any artist skill to apply washes, just coat the surface with the car laying on it's side, let it dry.. done....
The wheels/trucks, I spray oxide red primer ( my preference is Krylon MAXX, Red Oxide) in an old tuna fish can, and brush it on the wheels and trucks, then when it dries, I cover it with a wash of India Ink and alcohol all the wheel trucks shown were done this way... I prefer using spray paint primer because it's much thinner, wont detract from the detail and dries very fast. Hope that helps motivate you to give it a try, it's worth it..
I have attached some single straight on shots of some more of the hoppers for you...