Soreiyu
Sailor Tin Nyanko
That's nice.
To make things on SL, you have to put them on 2D in something like Paint ( or Photo Shop or Gimp or whatever).
You have to figure out where things will translate onto the 3D without seeing it in 3D ( unless you were well off and have a great program).
Then you have to work on shading it doesn't look flat.
It's a pain at first but it's not as hard as it seems.
Imma see if I can find a guide for making the clothes in SL.
But, yeah, then after that you would want to add 3D features like collars and hats and string.
xp
Isn't that just retexturing a design that has already been done? I think I'd like to learn how to do the full 3D process. At the moment the only 3D program that I can sorta use is Sculptris. I only use it to make random monsters though. lol
Chip Midnight makes the best guides. They just lableing where areas will fall on the body when uploaded.
http://wiki.secondlife.com/wiki/Clothing_Tutorials
You can make 3D objects and 3D bodies in Second Life. They are called Sculpties ( Sculptures) and Mesh. Mesh were just added recently. Before then you had the default Mesh bodies and you could make Sculpts but the Sculpts couldn't bend with your body.
I bought one fo these cats as soon as they came out... I had been waiting so long.
http://www.youtube.com/watch?v=aL-_lOQFpWY
99.9% of Content in Second Life is user made.
So the entire avatar in the Video is made by users. The movements. The shapes. The objects. With the exception of the sky, some fog, and maybe the water... everything else in the video is user made as well.
The same company that made that cat also makes babies. This baby is NOT a player. Everything on the Baby and the baby's movement are all user made. ( This is completely Sculpty, no Mesh).
http://www.youtube.com/watch?v=VtVAYrH_BPQ
It is easier to have the clothes perfectly adhere to the physical body you have with Second Life's default instead of dealing with Mesh right now. Because the clothes will be skin tight instead of based on a Mesh Model someone made.
This probably all sounds like gibberish.
When you are in Second Life you can alter your body. The regular clothes are skin tight no matter how crazy your make your body. The Mesh clothes on the other hand are stuck to whatever breast, hips, arms, waist, and chest the creator was using. The normal Clothes don't have alot of control so you want to use sculpts to make 3D details. The Sculpts will not pull and stretch to your bodies movements. The Mesh will bend and stretch to your bodies movements, but you are stuck with mega boobs and ghetto booty. Sculpts can be effected by wind and gravity. Mesh are not effected by wind and gravity.
So default is good for building whats against your skin and supposed to be tight anf form fitting. Mesh is good for making a new body. Sculpts are good for high details, wind, and gravity.
All this means you CAN completely make a 3D avatar from scratch and use it or display it in Second Life. But it requires you have animators and programmers work with you. So it's best to have a mix of things. At first you should work with the Skin tight stuff so you can get a feel on placement and cutting out textures ( like where sleeves in and how the neck line is cut).
My Favorite Mesh Clothes company
http://www.youtube.com/watch?v=dCIK3zHghb4
My Favorite normal clothes company ( See the skirt and ribbons moving? That is made of sculpts.)
http://www.youtube.com/watch?v=ugMEcI6v6cY
But.. yeah.. you can make an entire 3D avatar and 3D objects then put them in Second Life. If you only use free programs, it is hard though. I had to get a program that I could understand enough to make 3D objects and then convert it in another program and convert that again to get Mesh in the game. Sculpt on the othere hand I found different programs met my different needs for different parts of sculpts.
Everything would be much easier if I had Photoshop. But I don't have 1k. With Photoshop you don't need multiple programs and you don't need different programs to make different Sculpts and different mesh. If you get the right Photoshop, it does EVERYTHING.
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Silver Sable Coat 
Pudgie the Sparrow