I find the first avatar the best of the lot.You have the spot on lighting effects there.You could've done better with the lights on the second one.Doesn't look that much great.
The Alex Ox one with the b/w layer or the gradient map is just superb to me.The text colour looks good with the original colour of the avatar.On the other hand,you could've added a gradient map to the font layer in the coloured one.Else you could've simply left it without text and adding 1 or 2 textures/gradient maps or any other filters to it.
Overall its good,still not what is expected out of the Anish. level of GFX.You have done a lot better before.It may take time for you to go back there again since you turned a bit rusty,you'll be fine in no time.KUTGW and best of luck!