Orion's nebula and Running Man's nebula mosaic

My first successful mosaic! ✌️ Orion and Running Man nebulae, stitching three tiles together.
From bottom to top :
Orion's nebula (M42)
Mairan's nebula (M43)
Running Man's nebula (NGC1977)
Tender's cluster (NGC1981)
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Each tile was first manually stacked in DSS, then developed in Affinity Photo so as to obtain about the same impression. Those were exported to JPEGS.
Then, I used Affinity Photo panorama tool to stich the tiles automatically. I made a bit more editing in the same application to uniformise the luminosity a bit more, but the panorama tool had already done 99% of the job.
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M42-Orion_2nights_DSS: 405 frames, total exposure: 1 hr 7 mn 30 s
M42-TileU1_DSS: 67 frames, total exposure: 11 mn 10 s
M42-TileU2_DSS: 214 frames, total exposure: 35 mn 40 s