Digital arts 13 - Use G'mic in GIMP to play with flower photos

As my PC running Ubuntu broken down, I stopped to play with digital arts.  I am now coming back to the digital arts world with a new PC, of course, running Ubuntu. I played with flower photos taken by myself with different filters in GIMP, especially those in G'mic. It is amazing, the outcomes seem to be better than the original photo. That's why people need to do after works after taken photos. In the followings, cartoon, paint, blur, auto contrast adjustment and some other filters were used. As I tried too many filters, I can't remember exactly what filters had been applied to achieve the effects. As experimented, it is not an easy job to enhance a photo.