How can I make a big attachment?

[PinkyZebra]

I tried to make a big attach on the thread like Authentic. I don't remember how to make a big attach. I don't like the small attach thumbnail. Please can you help me. So I will remember. Thank you.

 

[Calvin]

You mean upload the pictures here?

I use Host Then Post

 

[PinkyZebra]

You mean upload the pictures here?

I use Host Then Post

Yes. I'm not sure how to use it. I'm totally forget and haven't go to AD for long times.