plaster or joint compound

[G1zm0]

I've taken down kitchen units and ive renewed a section of plaster 80cm x 90 cm board that was tiled. Ive put new piece up and used sticky fibretape and gyproc easifill to fill the gap in plastetboard.

This bit is going to be seen and I can see the tape, am I better using joining compound or finishing plaster to get it smooth to paint and put cooker hood up on it

 

[23vc]

Not really sure what you've done there but your best chance of filling over it and sanding flat-ish is something like easifil or a general boxed powder filler