Excellent start.The carbon fibre work looks great and your engine is very nicely painted.It's a good idea to spray the green areas.I did that when I built mine and it looks 100% better than the decals.
Here's a couple of links that might help you.
http://www.gurneyflap.com/benettonb192phot.html Some excellent photo's at GurneyFlap.
http://www.automotiveforums.com/vbul...light=benetton Davesans Finished
http://www.automotiveforums.com/vbul...light=Benetton My WIP
http://www.automotiveforums.com/vbul...light=benetton Mine Finished
Hope they help and I'll check in for updates.Best of luck with the model.