Then I've combined all the layers containing the ornaments: Layer – Merge Down (ctrl+e) and turned a little the new layer (ctrl+t), made a copy of it (сtrl+j), placed the copy under the basic layer and blurred it out, using a different filter this time: Filter – Blur – Radial Blur.

Designing Marine Wallpaper

This operation can be repeated 3-4 times or use the next combination of buttons ctrl+f:

Designing Marine Wallpaper

We'll create now a brush of bubbles shape, but firstly we have to open a new file of small size (700/700 px). Insert on it a figure of round shape with the Elliptical Marquee Tool. Paint it in black color with Paint Bucket Tool. Our bubbles will be of black
color, because the brushes' originator recognizes only black colors.

Designing Marine Wallpaper

Apply now the next command Select – Feather (the value depends on the bubble's size).

Designing Marine Wallpaper

Erase everything that is situated in the marking's zone:

Designing Marine Wallpaper

Insert on a new layer several flares, using the Brush Tool:

Designing Marine Wallpaper

Blur them out with Gaussian Blur:

Designing Marine Wallpaper