Step 1: Pieces You Need
You will need these pieces.
(Shown in picture(s))
Note: I did not take multiple pictures of the same pieces if there was more than one needed.
Step 2: Body
Put the two pieces shown in the picture on top of each other. Make sure the part you can connect stuff to is facing the opposite way of the other one.
Step 3: Saddle
Take the 2 by 1 piece with the dot in the middle on top of the two hook pieces.
Step 4: Front Legs
Take the two 2 by 1's and one of the 1 by 1's and put the 1 by 1 on top of the 2 by 1. As shown in the picture. Do this twice for the front legs.
Step 5: Connect the Front Legs
Connect the legs you just created to the part of the body that is higher. Shown in picture. Make sure the bottom of the Legos are facing backwards.
Step 6: Back Legs
Take the 1 by 1's with the hook and put them in the other end. You don't have to connect these to any other piece but the body.
Step 7: Head
Take the 1 by 1 big piece with the dot on the side and connect it to the 1 by 1 flat piece with the hook. Them take the mini slant piece and put it on top of the 1 by 1 big piece. Then add a 1 by 1 piece to the dot on the side to make the ears. Shown in picture.
Step 8: Connect the Head
Connect the head by the longer front legs. Shown in picture.
Step 9: Tail
Add the tail to the back.
Step 10: Add Micro Figure
Add your micro figure if you have one.
Step 11: Finish
Your horse looks awesome!
I also am going to make an Instructable on how to make a chicken, a duck, a cat, and a chihuahua dog.