Please help my 1st phal :(

[RosieC]

Agree with the above.

Assuming the last picture is the remaining roots after trimming, they look fine, a good number of remaining roots.

Pot back up in the smallest pot the roots will fit into, and care for it as normal. I agree about reading 'The Phal abuse ends here' thread. Even if you don't read all of it read the first few pages where there is tones of info.