I have now had a response from my tutor who has said that I need not include critiques of others' work as this is only for the purpose of group tutorials. I clearly do not have to submit this to him at this time; however, if I would eventually wish put CDA1 towards a degree would my course work be sufficient? I don't know.
I do keep a paper log as well as this blog and hope that if I do need this aspect of the work, my log will be helpful, as I will be looking at others work and commenting on it there. All I would worry about then is, if it has not been assessed throughout my course, I would not have had the feedback necessary during the course, if it is then found to be lacking.
I am fairly academic as I am a scientist by profession and am used to criticising and being criticised, so I am may be in a slightly better place than others would. However, this is not my area of expertise and I may fall flat on my face!
Not quite sure what to do about this situation.