Here is the guide transcribed into text:

1/ Prepare the surfaces

Make sure the walls are clean, dry and smooth before hanging the wallpaper. If necessary, use a plastering solution to fill holes and cracks.

2/ Cut the strips of wallpaper

Measure the height and width of the area to be covered, and cut the wallpaper strips accordingly. Make sure to leave at least 2 cm margin for seams.

3/ Prepare the glue

Use a paste specially designed for non-woven wallpaper, and follow the manufacturer's instructions for preparation. Apply the paste: Use a paint roller to spread the paste over the surface to be covered, being careful not to use too much.

4/ Apply the wallpaper

Lay the first strip of wallpaper on the prepared surface, making sure to align the edges with the corners of the room. Use a sponge or paint roller to remove air bubbles and secure the wallpaper to the surface.

5/ Connect the strips

For joins, use a wallpaper knife to trim the edges of the wallpaper, making sure to line up the patterns. Apply paste to the edges of the strips, and press them firmly together to adhere.

6/ Finish the installation

Once all the strips are laid, use a paint roller to remove the last air bubbles and firmly fix the wallpaper to the surface.

7/ Let dry for at least 24 hours

Before removing masking tape, painting or decorating. Good luck!