Turn any photo into a dot grid artwork with these Photoshop actions. You'll get great results with dots that change size. They get larger in brighter areas and smaller in darker areas. Free download available.
Go to Channels tab, hold Cmd/Ctrl and click on RGB thumbnail to select fishes from background. Use Move Tool (V) or hold Cmd/Ctrl to switch into it and drag a fishes in your working document. This is a very easy way to quickly select the colorful image from the black background. Depending on the different channels, the colors are paler or saturation. In this case, the fish will be slightly transparent, making them realistic in water.
Reduce the size of the fishes to a little less than the distance between the water plants and shore (Ctrl/Cmd+T). To transform the image proportionally hold Shift. Duplicate fishes 4 times (Cmd/Ctrl + J) and change the size of a slightly larger and smaller fishes, flip layers horizontally (Edit > Transform > Flip Horizontal) to make visible the diversity of fishes, arrange some little under water plants. All you want. This is a creative process and you can make your own version. After all the transformations I merge the layers with the fishes in one (Cmd/Ctrl + E). Place the layer with the fishes above layer with the temple to randomly fish have not started to go down the water lilies.
Here is my result. I combined all layers with the first plan and the main temple in one group "Temple and lotuses". That's it! In this work on the first plan until finished and you can move on. Be sure that your image does not leave white stripes on the edges of document (this means that the image does not reach the edge of the document). If there is one, use the arrow keys and move the desired layer and if necessary, increase the image. Check it always and use Zoom Tool (Z).
Now I start adding towers. I decided to add more buildings to make the transition between the temple and the mountains to landscape change smoothly. Into working document, add image "temple_in_the_trees_by_firenze_design-d4uaozg" (Miyajima Temple) and resize it that trees to become the same size. Place the tower from the right edge of the document to the roof of the main temple. Place this layer under a group "temple and lotuses". Do not worry that the remaining blank space under the tower. I will add that there is a tower, only smaller.