Hi snow
It sounds great. I could go on and on telling you how to do it but there really isn't a specific way to do it as you probably found out a year ago.
We got some tutorial which everyone uses and give them to others who wants to learn. The only thing we can do is that when you have tried your best, then we can go in and tell you how it is and what you need to do better. We can't tell you how to do it specific...we dun make vids

but we can tell you stuff like "You missed this and that" or "That looks nice" or "You should have used the clone tool and then used some time cloning it instead of just pasting a copied layer from teh page".
As you know being an editor takes patience specially when you work with sfx but when you get the hang of it it doesn't take as much time as it did when you started.
Anyway before you go; RAAWRRRR I WANNA WORK NAO!!!
I need you to ask: Is it Glass Mask that you want to work with or just one of our other titles?
I'm asking this since Glass Mask is the only manga where we edit the sfx. Our other titles doesn't have that problem so they aren't that hard to edit compared to Glass Mask.
Hope I didn't scare you away^^