Thanks Bro I wish one day I will have the size you have on your arms (Naturally like you) 
you will... dont let ANYBODY limit you and tell you what you can or cant do.....
if you love lifting... then patience and hard work will pay off..
yeterdays i was doing tris and my my by was talkin about arm measurements.. and i said I will get 20+ inch arms i dont care if it tkes 20 yrs i love lifting there is no rush.
same for you man keep liftin CONSISTENTLY and also what is key is learning how to work the muscle..
thats why you will see me always asking questions in the training forum.. knowledge is key..also i read bbing mags... and i Love charles glasses articles... i watch his techniques and training methods on dvd .
so with knowledge + patience + Desire for lifting ... you will see great results