Rick,
It's not too difficult to texture the wing. What I did back in the day at Aerodrome was too draw out the internal structures then remove the plastic between then structures. I used my trusty Dremel tool too lightly dish out the spaces but you can use an knife as well. With this done you just need to sand it down a bit. Be careful if you use a Dremel not to over do it. You want slight dips visible between the internals not big ones. I hope I'm being clear enough to be understood. I still have difficulties organizing my thoughts some days.
Highest Regards,
Gregory Jouette