Can certainly give it a shot! I have these tutorials bookmarked just in case I see you logged in. I'm usually available 8pm-12am M-F weekdays and 12pm-12am weekends EST
It may take some time to experiment with the options, but I'd be happy to help.
In case you manage to grab another GM other than me before then, listing some of the DM commands here as reference.
=c sethead pcname, 162 or 165
=c setcolourskin pcname, 80 (or any color from appendix D in the handbook)
=c setappearance pcname to 3 (halfling-based w/ custom heads) or
=c setappearance pcname to 82-87 (for NPC goblin forms)
Let us know when a good time for you is to meet and we can help customize your greenskin