How do I add the dugout/pitch textures/balls?

- the ball has these files: ball_shader.png & orange_ball_shader.png

- dugout has these files: glass_shader.dds & .png, metal.dds & .png, wooden_shader.dds & .png

- the pitch texture (pitch_texture.7z) i'd like to add have these folders: damp, dry, hard, muddy, perfect, water logged

where and how do I add them to my game? I'm currently using Tumma_R skin

for info on this see this thread