Thanks a lot!
I agree on adding more mist to the combined image, I think I could have also added a few resolution adjustments to make the images mesh better. In the end I had to stop to continue the next step, but the excercice itself was very useful to learn some of the manipulation tools.
I hope you can indeed keep this as a hobby. I kinda drifted away for a while because, well, working and then studying and practicing is really hard, especially as a gamer who wants to play some of my backlog. But it's been so fullfilling the effort is very worth it, and it's great to share and see what others in similar situations are achieving.
On regards to the methodology... I guess the biggest lesson I'm coming to apply from my work experience (which involves programming/management), is to:
1) Have a clear goal.
2) Break down the path to achieve that goal into achievable tasks with rough time estimates.
3) Learn from the mistakes, improve them in the next iteration. Repeat.
It's how I've been able to continue the webtoon despite the arduous work that goes into creating it. I'm sure that if you compare the initial chapters to the latest one, you will notice a huge leap in quality, and i've not doubt it will improve even more, not to mention that at least the webtoon is now a reality (an actual product), even if it needs improvement. Kind of a scrum process if that makes sense.