Hello everyone, hopefully I'm asking in the right forum section. This texture here contains a lot of the major visual and lighting effects for a game I'm working on. It's 1024x1024 and I'm looking to recreate it as accurately as possible in 4096x4096. My question is, more specifically than asked in the title, are there any tools for recreating effects like these easily and accurately? I use GIMP and I know it has lots of tools and filters, but I'm not super experienced with them quite yet. I see some things I could recreate using tools but I don't know about most of them. I wanted to see if there was anyone here that was more experienced with GIMP or other programs/tools that knew if I could achieve my goal with tools. One of the reasons I'm emphasizing using tools, is that besides the fact I'm pretty adamant that I want my project to remain faithful to the game's original design anyway, these visual effects are really prominent, so I need them to turn out especially well.
If anyone wants to take a closer look or wants to help, I can share the .dds file. For whatever reason, GIMP blacks out the alpha channel when exporting as a PNG.