How can I achieve this kind of background effect in Photoshop?
I tried some tips using textures or noise filter, but I can’t get close.
I like that the noise on the picture has gradients and unevenness – it looks natural and close to paper and chalk or something (especially the window light).
I tried to paint the picture using paint bucket and gradients first and then applied noise filter above all. Also tried to apply noise using masks on painted layers to get a gradient grain effect.
All looks very rough and computer-made: