To change the eyes' color we have to create a new layer. Paint them in the necessary color with the Brush Tool and blur the edges out after that, using the Blur Tool. Finally we have to change the layer's blending mode on Overlay.



Merge down the layers (ctrl+e) and apply the here shown filter on the new layer: Filter ? Blur ? Smart Blur.



Choose now the Smudge Tool and smooth out the unevenness on the girl's skin and on her hair that have appeared when using the last filter. Here we have an example:



Open a butterfly picture in a new window: (ctrl+o).