Cover the work area and prepare the materials.
Tape the painter's tape horizontally across the canvas along a one-third line to mark the future white dividing line between the sea and the beach.
Pour the texturing paste into a bowl.
Mix the texturing paste with the yellow and brown acrylic paint to achieve the desired sand color.
Apply the colored paste to the lower part of the canvas using a painting knife, and create texture with sweeping strokes—this will form sand dunes and flatter areas in the sand.
In a second bowl, color the texturing paste with medium blue and a little dark blue.
Apply half of the blue paste to the center of the canvas.
Add a little more dark blue to the remaining texture paste in the bowl, mix it in, and apply it to the lower part of the picture.
Blend the light blue and slightly darker textured paste areas together.
Peel off the painter's tape before the paste dries—it will leave a clean white line.
Once dry, lightly sketch the desired details (umbrellas, figures, boat) with a pencil.
Paint in the details using a fine brush and acrylic paint, then let them dry.
Seal the finished canvas with Marabu Aqua Satin-Matte Varnish and let it dry.