In this tutorial i will show you a way to create dreamy and sparkling star effect on a photo.
1. Duplicate your pic. I use this stock:
I think it needs more light so i create a new adjustment level:
2. Ctrl+Shift+Alt+E to get a new layer. Duplicate it, apply Gassian blur, 5px. Then use Lasso tool to draw a circle around the model with feather 50, after that press Delete:
3. Ctrl+Shift+Alt+E. Create a new layer and fill it with black ( choose Edit-Fill). Choose Filter Noise Add noise:
4. Choose Image-Adjustment-Threshold: (adjust the intensity depending on your pic). Here i choose level =120. Duplicate this layer (on my layer pallete, its Layer 4) twice.
5. Choose layer 4, apply Motion blur:
6. Choose layer 4 copy, apply Motion blur:
7. Choose layer 4 copy 2, apply Gassian blur:
8. Change the mode of layer 4 copy and layer 4 copy 2 to Screen 100percents we have:
9. Merge these three layers , i rename it S. Duplicate S three times and change the mode of these layers to Screen 100percents (except S).
10. Merge all S layers to a new layer, i rename it B. Set B to Color Dodge 100percents . Eraser unneccessasry parts on model:

11. Duplicate B , apply Gassian blur with 1.5px, then adjust Level:

Here is final effect:
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