Thank you so much for your kind comments, Narcissisto and Tanystropheus.
Tanystropheus, I puzzled a little over what you might have meant by the 'yellow tint', then it occurs to me you may be thinking of the pages of my Moleskine sketchbook.
Here is Rana, my Nigersaurus, trying to devour a page.
I couldn't do any post-process if I wanted to; I'm afraid I don't know how!
I understand how having an uninspiring teacher can have a significant effect on one's enjoyment and development in a subject, so I expect yours is not such a 'weak' reason. But it's why I have the very highest respect for teachers and always did. One of my dearest friends is one and my mother was one before. I know I would fail singularly at teaching.
With that in mind, I don't know how much good I'd be at giving advice about fluidity in drawings. Practical tips are one thing but visual characteristics are quite another.
Here's the early stage of the Leptoceratops & Protoceratops fight that you may have seen at some point in this thread (that's also tinted Ingres paper, by the way). I must have had some foresight in making a scan of this at the time! I asked the scanner to darken this one so that all the faintest gestural lines will show up. Roughing out the entirety of a figure and thinking of the general shapes first is usually advisable, rather than trying to draw something to near completion in sections. At this stage, you needn't worry about mistakes and simply enjoy the flow of the mark-making. Also, if you enjoy animated films (and anyone who doesn't is simply not worth speaking to, frankly ;D), it helps to think like an animator about movements.
I still struggle with retaining the freshness and spontaneity of a drawing even now. Many of my finished pieces lose so much of that.
its so cute! the little thing eating a page of your book.