GIMP Photo Editing Assistance Needed

I'm working on a photo editing project using GIMP and I'm in need of expert assistance. Specifically, I require help with layer management and adding textures and effects. Ultimately, the completed project needs to be saved in JPEG format.

Ideal Skills and Experience:
- Extensive experience with GIMP
- Proficiency in photo editing
- Excellent understanding of layer management
- Skilled in adding textures and effects
- Able to save files in specified formats