Difficulties in the Cortex

Like I said in an earlier post, I've been really unhappy with my drawings of Buzzy. I don't know what it is, but I think there are a few issues that keep me from drawing him to my liking.  First, I'm basing him more off his animated self. Honestly, the last time I ever saw this show was late 90s, early 2000s, so my memory isn't the best on his animated part of the attraction and the animated sequences recorded for tributes like on Martin's Videos are low quality. I hate sounding like a Negative Nancy, but it definitely has been a rocky road for this Commando. Nothing's set in stone yet since I'm still in design phase with him, but here are a few head sketches of him and some notes that I took on it.