@OnlyIn(Dist.CLIENT)
public class CustomArrowEntityRenderer extends ArrowRenderer<CustomArrowEntity> {
    // Put your custom texture here
    public static final ResourceLocation TEXTURE = new ResourceLocation("modid goes here, "textures/entity/custom_arrow.png");

    public CustomArrowEntityRenderer(EntityRendererProvider.Context manager) {
        super(manager);
    }

    public @NotNull ResourceLocation getTextureLocation(@NotNull CustomArrowEntity arrow) {
		// You can have the texture change based on the entity's health, age, etc. Here I just have it always return the same texture
        return TEXTURE;
    }
}