who and how i can upload own motion trails?

First buy a custom trail from shop, Market, or from someone off the forums.
When bought activate it. Make your trail.(Save it as .png or .jpg)Go to the trail and upload the art you made to it.

1. Go to Shop
2. On the left side of your screen, click on "Textures"
3. You have to have one of this items, in order to upload your texture to it: "Right hand texture trail", "Left hand texture trail", "Right leg texture trail" or "Left leg texture trail".
4. If you have one of these, scroll down on "Textures" until you find one of the already mentioned items.
5. Click activate if they're still deactivated and scroll once again the "textures" page 'till you find the same item. If your trails items are already activacted, follow to the next instruction.
6. On one of the trail items (already activacted), click on "Search" and double click on the pretended texture that is in your computer.
7. Click on upload and voila! You have one of your trails with your texture.

Any doubts or question, feel free to ask.

EDIT:
Ninja'd.