how do i write into the manga page and do edits?

[Punk Hazard]

how? like what system do i need, cuz i really want to take part in the fill-in-the bubble contests

 

[Anduril]

Photoshop or paint perhaps...

Photoshop or gimp would be smoother though..

 

[Punk Hazard]

anything free?

 

[Jupiter]

Filling in a bubble is not that difficult you can use paint or gimp (free) I recommend paint