It's nice idea, but i also don't know much =)
On start i have 4 ways:
1. Simple retexture items(bad way cuz other players also dressed in my textures
2. retexture some rare ingame item (i chose this way, but stuck)
3. Learn about "Try on" system in lineage shops(when you get texture for 10 seconds) but can't find info.
4. Trying use html code in clients help menu to summon textures (what i say? i don't understand)
and i have #5 way - use l2phx >:(