Here is what a French lad has done:

http://kitcar.bb-fr.com/t6919-mon-three-wheeler-125

It's brilliant.

Cool, though some gloves while welding and a mask while sanding might have been wise.
Seems to go all right.

Brilliant.

Good to see a young person putting some creativity into effect.

I especially like the kick start sticking out the side of it.

I made something very similar to that for my Design/Technology A-level

The front "uprights" look a bit fragile, but he's done a great job on the bodywork.