I must say I am a bit surprised by the quality, you should direct this towards oekaki as I really like it(minus the yaoi)
To improve? the yaoi is somewhat repulsive, study neoclassical art and anatomy to understand the male form, also you should veer away from the gokujou mecha eyes in some other pieces not related to the yaoi.
I love the 2ch cats, and want more, draw/upload some here so I don't have to go to another site for them.