Once you've identified the cause, undertake necessary repairs.This might involve fixing leaks, reinforcing structures, or replacing damaged materials.
Ensure the wall surface is clean, dry, and free from any debris or protrusions. Repair any cracks or holes in the wall before applying the wall sheets

Start by defining the style you want for your interior. Whether it's modern, traditional, minimalist, or eclectic, understanding your preferred style will guide your design choices.
Select a color scheme that complements your style and creates the desired ambiance. Consider factors such as the size of the room, natural light, and your personal preferences.

Wallpaper is typically made of paper or vinyl and comes in rolls. It can also be made of fabric, grasscloth, or other materials.
"Wall sheets" is a general term that can refer to various materials used for wall coverings. It might include materials like drywall, paneling, or other sheet-like coverings.