Yeah I had this problem, ponyskincraft has gotten kinda bad. I started using MCskins3D, the most recent version comes with a pony model.
If you are interested in getting MCskins3D, you want vers. 1.4 or greater. Ill include a link to the minecraft forum post about it. If you can't find the link elsewhere I recommend googling it, but I think the Planetminecraft download is outdated, but when you install it a prompt will come up to update it.
http://www.minecraft...18812-mcskin-3d
Something you should know before you start making skins:
The default is a female alicorn, if you want to change it you have to directly get the colour and insert it, and you won't be able to see it until you wear it. To fix this I upload it to Ponyskincraft just to view it, I can't change it or upload it there because the site is broken.
I hope this helps.
Edit:
The planetminecraft version is over-dated, in the newest update they tried to make it simpler by removing everything that is not the human. I managed to find my verson online, if you can not I will upload it to dropbox and post it.
Edited by Strawberry Swirl, 18 March 2016 - 05:34 PM.