Hi.
You should definitely watch references of what looks like a running animation in KOF games CVS games etc. then try to frankensprite limb by limb.
I have another idea is to perhaps use POTS/CVS type Tia (DW version) as a base for your run animation by editing the colors etc.
Tia Langray
I don't know if this is opensource nor if you know how to open it and get the sprite with fight factory but it may help you on your creation.
I also created a custom run for my character Rachel wose the base is Tia as well, but I edited the sprite style to something a bit different, and the color management is a freaking mess since I used a very messy Tia as a base for my work.
By using DW version if it's allowed, you would be sure not to have weird color mess like I had...