And what about my Stella?

Hello, I'm still before CPE exam, and found the idea of "Please Call Stella" in one of the recent fourm's topics really interesting way of checking one's pronounciation :) It would be really nice if different people put their recordings here and/or express their opinion about anything going wrong. Ok, for a good start please share your views as to the weak points about my version.

http://liam.rm.pl/stella/stella.mp3

Bardzo przyjemna intonacja i ogolnie zrozumialy akcent. Super nagranie.
Uwagi (drobne):
Pocwicz dlugie samogloski, bo sa troche za krotkie w Twoim nagraniu:
peas - brzmi jak "peace",za krotka samogloska i bezdzwieczna koncowka. Powinno byc dlugie/i:/+/z/
cheese - dobra dzwieczna koncowka /z/, ale to /i/ troche za krotkie
these - brzmi jak this, powinno byc dlugie /i:/ + /z/
bags brzmi jak backs, koncowka powinna byc dzwieczna - /gz/
thick, with brzmi jak fick, uiv - pocwicz wymowe /th/

Jej, super. Dziekuje Ci za wyczerpujacy, bardzo istotny dla mnie komentarz :) Pozdrawiam serdecznie i jescze raz wielkie dzieki.