Well done on the first hollow form. On a personal note the top of the for where there is an angle to a flat I personally would have liked to have seen this curving into the base of the lid which will help the form flow more easily
There is actually a little more of a curve than there appears at that angle, but truthfully the top was made for something else - it's for the end of the month competition so I thought I'd finish it first then if my original plan comes to nothing at least I have an entry finished. I'll post another top if I get that far.
Quercus cerris. It's very common in Cornwall - I believe it was commonly grown for pit props as it grows quicker than English oak. It got a third in the TOTY.