New to hearthstone started about a day or two ago.

My deck:

I was wondering if anyone could lend me any tips on if their is anything i can do to improve mainly a problem i have been having lately is i keep getting destroyed by Priests everytime i have a good card down they will either use a destroy minion with 5 or more/less attack or use the card that turns it to their side.

Any tips would be highly appreciated thanks