For English scroll down.
Bajar para castellano.
I eventually finished the single welted pocket. The result is not wonderful but at least I understood the way it goes. It is quite easy actually, I just could not visualize the BWOF directions. So if you are a beginner like me and you wish to make this kind of pocket, you'll find below a tutorial. Oops... I'm feeling kinda lazy so I'll only post it in French today but if you are interested don't hesitate to leave me a comment and I'll update it to English.
*Désolée pour la mise en page bancale, j'essaye de faire mieux.
Sorry for the crappy layout, I'm trying to fix it.
Lo siento para la mala presentacion, estoy intentando arreglarla.