Step 1
Open photo in Photoshop. Go to Image > Image Size and update size to 1000×750 pixels. Double click on layer thumbnail on layers palette to unlock background layer. Create a new layer under flower layer and fill it with black color (Name it “background”). Select flower layer and with Polygonal Lasso Tool select flower. Invert selection by going to Select > Inverse and press Delete to clear selected area.
Open photo in Photoshop. Go to Image > Image Size and update size to 1000×750 pixels. Double click on layer thumbnail on layers palette to unlock background layer. Create a new layer under flower layer and fill it with black color (Name it “background”). Select flower layer and with Polygonal Lasso Tool select flower. Invert selection by going to Select > Inverse and press Delete to clear selected area.