I also tried to covert a Skink Oracle into a Skink Priest, I put him on a Oldblood Shield because feet are weirdly angled.
Nice work so far! I would recommend complimenting the red color scheme with a healthy application of a wash, such as the red wash from GW paints (Carroburg Crimson) to really bring that detail out
Thank you and luckily I do have carribourg crimson, however do you know where I should apply it and should I put washes after dry brushes or before?
I always put the washes on before drybrushing. This helps the darker wash seep into the recesses. After the wash is dry, then very lightly drybrush on the highlight/lighter color paint.
Not especially - it looks pretty good to me. If you want more, you can get a set of Gryph Hounds relatively cheaply compared to a lot of GW’s other stuff. Otherwise, a good base never goes amiss, but mainly keep up the great work!
You could adjust the leg positions a but to make it fit the Gryph Hound's back a bit better. For my Capybara riding Skinks I did that by just cutting the legs off at the thigh and glueing them back on in a different angle, to make the gap between the rider and the mount smaller. http://www.lustria-online.com/threads/aginors-painting-blog.19114/page-40#post-248907 But then your Skink is already painted, which would make me a bit reluctant to go back and cut stuff off.