the only way i know of for you to get the photos into a texture is to use photoshop!! you will need texture templates(seam guides) for V3(sorry not sure where these are available!!) but you can also use the templates for Aiko3(if you find them first) as they are the same,and work with V3!!!! in photoshop you will need to cut parts from your photos,and line them up on a new layer in photoshop!! keep cutting bits out of the photos,and applying them to new layers,and lining them up,and gradually you will have a quite patchy texture,made from your photos!!! then when you are happy with your lined up pieces,and that they have covered the template(making sure you have covered the outlines of the texture seams!!)make a new layer just above the template layer(first layer you worked from)and use the fill tool to make a coloured layer(colour it by picking a colour(midtone) from the skin in the photos!!! then delete the layer that has the original template(seam guide!!)!!!then merge all visible layers down!!! then you will need to go all-over your new texture using the patching/clone tool to blend it all together smootly!!!!(take your time with this part)

anyway that is roughly what you need to do!!! but someone else might have a link to a picture tutorial that may help you better!!!!good luck and Have fun!!!!!!!!!!!!!