like n/p said,either green stuff or my personal fave,2 part automotive putty.
looks preety sweet the way it is though,maybe just a touch more sanding on the head to clean hm up a bit,but again,pretty decent out come though!!
(also,a good tip to help avoid "rub/chipping" issues,lightly spray your cleanded/prepped bot with a light coat of primer.
let it dry completely,then transform your bot back and forth a few times.
this will instantly reveal almost every spot you'll need more sanding,and you didn't wreck your finish coat doing it
)
