Errors in statement

Dear all, I am an English learner, so it would be great if you could point out to me any mistakes I've made in the message. Or even better ways to say it. Please correct anything I write. Even this Signature. I would really really appreciate your help.

Should the word 'signature' be capitalised? Are there any errors in the passage?

Thanks in advance.

Hi Everyone,
I am learning English and would appreciate it if you notify me of any errors in my posts. Could you also tell me how it should be said.
Is the word "signature" capitalized? I appreciate your help.
Are there any errors in the passage?

Thanks in advance.

p.s.
Make the sentence on the word signature a bit longer. English is one of the hardest languages to learn but you can do it. You will get frustrated at times but do not give up. Keep working at it and before you know it, you will be fluent in English.;-)