These are looking real nice! You did very well on the cylinder thing. I tend to jitter my hands too much ended up in wiggly lines, but this is looking cool!

Well done andypandi, but don't get too distracted by the fur. When drawing an animal with a very thick coat try to imagine what's underneath. Consider that all animals (all vertebrates, actually) have many things in common. They all have a spine: fish, reptiles, amphibians, mammals, birds, etc. if they have a spine they will also have ribs and a skull. They will also have legs (or fins or wings) and a certain number of fingers (this depends on evolution, but we all start from this base). When you think of an animal with four legs (or two legs and two wings), bear in mind that they are all moved by the same muscles, simply arranged or developed differently. So if you know what the neck of a human being looks like, you can imagine with some approximation the neck of a baboon or a monkey. (The big difference in primates is the head and the posture. In some cases the presence or absence of a tail). So, in the case of the monkey you drew, you can imagine what the neck looks like by looking at similar animals without that thick fur. Once you have the structure, you can simply outline the fur, drawing it if you like.

Looks good. BTW, you're welcome to join us in the figure analysis thread I started. I've been doing those exercises with friends for a while. The exercise is a good in-between step between learning basic forms and more complex mannequins.

Nice improvement. They're looking more like cylinders and less like cups.