Use some paper textures. Set it to Linear Burn mode.

添加纹理纸，调整好大小，图层模式为线性加深。

youdao

Name this layer as "eagle" and change the layer blending mode to "linear burn".

命名为鹰图层，图层模式为线性加深。

youdao

Name this layer as "eagle" and change the layer blending mode to "linear burn".

命名为鹰图层，图层模式为线性加深。

youdao