Applying peel and stick mural wallpaper is a straightforward process that can dramatically transform any room. Here's a comprehensive guide based on the provided search results:

Preparation

1. **Measure Your Wall**: Accurately measure the wall to determine how much wallpaper you need. Consider ordering a bit more than your measurements to account for mishaps and pattern matching.
2. **Prepare Your Surface**: Ensure the wall is clean, dry, and smooth. Remove all faceplates and socket covers. Clean the wall with a sponge or cloth and a gentle cleanser to remove dirt and dust. If the walls are newly painted, wait at least three days before applying the wallpaper.
3. **Wall Priming (Optional)**: For best results, especially on walls that aren't perfectly smooth, consider priming the wall with a premium satin or semi-gloss paint and allow it to fully dry, which can take up to four weeks.

Installation

1. **Cut Strips**: Start by cutting strips of your self-adhesive wallpaper to wall height, allowing a few centimeters on each end for trimming. Ensure the pattern aligns perfectly if your mural has one.
2. **Guide Line**: Measure the width of your wall and draw a straight, level, vertical line from the ceiling down. This will be your guide for the first strip to ensure it's applied straight.
3. **Apply the First Strip**: Peel back about 12 inches of the backing on a strip, align the top of the paper at the ceiling, and then slowly peel and stick the paper down the wall, using the guide line as a reference.
4. **Smooth Out Bubbles**: Use a plastic smoother to eliminate air bubbles and ensure an even application. Be careful not to press too hard to avoid tearing the wallpaper.
5. **Align and Continue**: For subsequent strips, align the edge with the previous strip, ensuring the pattern matches seamlessly. Overlap slightly if necessary and use a utility knife for precise trimming along edges and around outlets.

Tips and Tricks

- **Patience is Key**: Take your time to ensure proper alignment and smoothness. If bubbles appear, work them out by applying firm pressure with a smoothing device.
- **Enlist Help**: For larger sections, having an extra set of hands can make the process easier, especially for holding and aligning the wallpaper[5].
- **Repositioning**: Peel and stick wallpaper allows for repositioning. Don't press too firmly until you're sure of the placement.
- **Use the Right Tools**: Recommended tools include a tape measure, spirit level, plastic smoothing tool, metal ruler or straight edge, cutter knife, pencil, sponge or cloth, and a ladder.
- **Surface Compatibility**: While peel and stick wallpaper can be applied to most surfaces, it adheres best to smooth, clean, and dry walls. Textured walls may reduce the wallpaper's lifespan.

Removal

Peel and stick wallpaper can be easily removed by slowly peeling it off the wall. This feature makes it an excellent option for renters or those who like to change decor frequently.

By following these steps and tips, you can successfully apply peel and stick mural wallpaper, transforming your space with minimal effort.