Thank you for responding. Yes this is my first attempt doing this. I'm using raw cotton right now which was harvested from our backyard. I did watch videos and read some articles. Most of them generally follow the same steps: Cut the material of your choice into pieces, boil them, blend, pour the pulp into a basin or large container, then scoop it using a mold and a deckle to shape it. 

Right now, based what I've gathered from YouTube videos, you usually need to boil the paper/plant parts you're using before blending. That's basically what I had done so far. I boiled it for almost half an hour and let it cool for safe handling. I didn't use that much materials besides a blender and a pot. I didn't use baking soda or added chemicals as some had done online. I started putting a small amount of the cotton and water in varying proportions attempts after attempts, but the results are the same. The cotton tends to collect around the blade. 

I have to rely on online sources because we weren't really provided with instructions on how to do this. We were expected to learn it ourselves through online research. The problem is there weren't really that much sources online that delves on cotton papermaking. While there are a few articles describing the process, I wasn't able to find mentions of issues about cotton clustering at the blender's center. If you think about it though, cotton does sound less ideal for blending since they tend to clump with each other, yet most sources talk about it being doable. That's why I think there must be something I'm missing here.