The animation at first glance looks pretty nice; not something too extraordinary, but still a good start for an animation base.
The base has average pony anatomy, which is good and the details look nice. I notice, however that the mouth is missing beyond the first few frames.
Animation looks pretty fluent, except that it doesn't look complete. It starts, goes on for about a second then repeats. If this is a work in progress still I understand this, otherwise it doesn't appear as if it's really ready until animating the rest is complete. Other than that... I really see no other problems. Like I said, it's okay and it could be better, especially when it's complete.
The animation goes very smoothly as its a working progress it is a good start! the eye looks well too but after a while it looks kind of choppy . also if this will be a base you should make it blank it will be easier to use and also make a downloadable zip file with the frames in it please so ill be able to use it. it goes kind of too fast for my eye to catch the walk cycle especially if its not done also you should make a place where the pony walks back to the place she came from and then turns around or remove that part where she walks out from and just make her walk left and right.