Hello again! You're making progress but there are still a few things you haven't corrected:

1.You stil aren't drawing through your forms. Like I pointed out on the previous critique, you should draw all the forms completely even if the viewer shouldn't see them. So draw legs fully even if they're back legs and they're covered by the torso of the horse.

2.You are making intersections on places that aren't possible. When you are connecting two forms you must fuse them on a part where both forms exist. For example on the muzzle of the horse you connected one part of the muzzle to the air instead of the cranium of the horse.

This is the same with the way you connected the legs, drawing a ball on the middle of the legs doesn't actually connect them in 3d. The point of the intersections is to take 2 forms and fuse them as if you were building a new 3d form, so the drawn intersection must be part of the 2 forms.

3.Your simple forms still aren't completely simple. When drawing simple organic forms, they must be the same as on lesson 2, two identical balls connected by a tube of consistent width.. They can't be bent cylinders like the ones you used on the legs, or sausages that are bigger on one end than the other.

Before moving on I want to see one more page of another quadruped, make sure you keep in mind those 3 things!