What does ET mean here?

Hello,
I have submitted one illustration. I Will proceed if you like the style. Feel free to let me know if you need any changes.

I'd like to work on this if you extend the time. I was going to submit today and even worked a bit for the contest, but got feedback from some other contest.

Hi,

Have you take time for watch my illustration design (#26170108) ?

Let me know how you like and if you need some revisions.

Best regards,

Thomas D.