an oak wand, lucky you. i really like oak though oaks don't grow around here.
i would choose the runes wisely, think about what the wood is natural able to do [protection for example] as well as what you wish to use the wand for [luck spells for instance]
i think it will be a fine wand, you seem to of poured a lot of energy into it. the blessing is fine as well. you could go really elaborate, but as long as you're sincere, it should be fine.
i would suggest telling your parents at some point. legally speaking until you are 18 [or whatever the legal age of adulthood is in your area] they are responsible for you. they might say yes, they might say no, but as your parents they should know.