Hello, I would like to describe my different professional experiences / skills by using synonyms and alternatives. I'm not sure if they are correct (or if the grammar is).

I have become experienced with the complete range of work about finance and trade.

(can I say range of work; is about correct?)

2.) I am particularly accomplished on specific fields.
(can i use "accomplished" in this context? Is "on" correct?)

3.) Iím confident with exclusive markets.
(is this sentence correct?)

4.) I have directly faced a myriad of client requests.

5.) The variety of brands I had the opportunity to work with, consented me to...