Ha just looks so good I recon! Particularly on this region.
Nicely framed too and plenty of HII in that image
Re needing the flat, the top right is meant to be darker than the lower left becasue there are less stars in that direction. The Trarantula is kind of on the edge of the galaxy so the main part of the galaxy is down to the left in your image so there should be more stuff down there, by spreading it all out like it looks like medling'ol Steve (meant nicely Steve

) has done, is actually not quite right. If you do flats you will get these sorts of things more accurate
Mike