I have come across 2 ways to say this. Can anyone tell me if both are correct?

Ingilizcen iyi

Senin ingilzce iyi

Also how do you say   ... my turkish is poor

Both of them OK but first one is mre used/preferred. And there is a third one:

Senin İngiizcen iyi = Your English is good (compared to mine)

Türkçem kötü (bozuk/kırık) = my Turkish is poor

 My thoughts as a learner:

You can say İngilizcen iyi (note the dotted i at the start). I think would be the most popular way of saying this. (or less used is İngilizcen iyidir)

or Senin İngilizcen iyi (the ´senin´ is optional, but their must be an ´n´ after the İngilizce to indicated that it is ´your´ English.) Most native speakers would not use the ´senin´ part from my experience. It is only used for special emphasis from my understanding.

My Turkish is poor = My Turkish is bad = Türkçem kötü(dür) The part in brackets is not normally used.

Ahhh, not fast enough . Thanks si++

Maybe sounds better to say " Türkçem az."

thank you for ayour replies and explanation. Another problem solved!!

sağol