My stab at it.
How good is my English? or How good do you think my English is?
I'm just getting started to learn English.
I'm just getting started with English/...getting started learning English.
(my opinion is that would be more natural this way, but let´s wait for more opinions on that one.)
So that's it, thank you all.
(it´s just my style here, I wouldn´t separate the two parts.)
Overal your piece of text is very good, you are really off to a good start!
Congrats on your writing skills.