I "One-Shotted" this with a bic ballpoint in church a few weeks ago- no pencils, no rough outline, just went to it and it turned out marvelously. i feel pretty good about it.
I love dinosaurs. they're so beautiful. You may notice the robust bones of the forelimbs as way more substantial and beefy than the actual fossil remains. I sort of gave it a big cat feel in that sense. but it feels more powerful with them in the frame. I like that it feels alive, not in a frozen, odd pose like some taxidermy bit.