I guess I will start posting that fanfiction (it is titled "Old Threehorns") here once I finish the posting of "The Cold Time". However, "Old Threehorns" is not finished so far. I'm afraid it is not a very readable product. It probably is too long winded. I think only Kacie and Kor ever read as much as the 9 pages prologue.
I'm quite happy with the way Tops and Tritus (that's the name of the other character) turned out. As for the little mistakes, where my memory failed me when I was drawing Tops, he lacks the bony projections which he ought to sport below the end of his frill. Also Tops in the movies has a few lines running from his nose horn up between his eyes making his face look a little more angular (while Cera's face is very round). The sockets of his horns are smoother in the movie than they appear in this drawing. Haying established these points now I will remember them in future drawings of Tops. It is interesting to draw him as I think noticing these points may be helpful in drawing grownup characters in general, not just him.