Hi damir, about the Icons, yes just merge two PNG images, but let's say this is a simple tool where you can't add other things like frame effects etc..
On AROS One but also on IcarOS there are more good tools to create icons, the first one is "IconPoser", simple program to merge images, the second one strongly recommended is "IconEditor" where besides merging images you can add many effects, Glow and many other important tools.
I am responding here to your PM:
Regarding your PM request, help is always welcome, as said my AROS One is everyone's, whatever you do will be placed on AROS One, thank you for your cooperation.