This weekend, I took some time to<snip>
Nice work! I agree with the post saying it would be better to scale down the dog slightly.
Skilled work! I'm happy to see artists' exchange too. I too use the trusty paint for my edits, but didn't expect you pros to do the same But there must be something more sophisticated even for pixel graphics? No?
I too heard mspaint (the classic one and the not 3D one) being used surprisingly a lot.
Some people even prefer the old UI (non-ribbon version) of mspaint for productivity reasons which instructions available on the Internet (
https://www.askvg.com/how-to-get-the-good-old-ms-paint-without-ribbons-working-in-windows-7/ ).
As mentioned there is also mspaint.net or the big one GIMP which some people use for pixel art (
https://www.reddit.com/r/GIMP/comments/29btcq/how_to_set_up_gimp_for_pixel_art/ )
In terms of focused pixel art area software, two dedicated tools I know of are Pyxel Edit & Aseprite. Latter has tooling and automation although I haven't used it personally. First one IMO have better UI.
https://pyxeledit.com/index.phphttps://www.aseprite.orgThey were about USD15-20 if I recall correctly. You should be able to try both, without paying anything.
Aseprite is open source, some people download the source code, compile it and share the resulting binary (EXE) which is easier to find for Windows that way compared to other OSes (might come in handy, for a while, if you need the full one but having budgeting issues). It is always a risk to download from unknown sources though.
Both Pyxel Edit and Aseprite have learn sections with lots of resources to start/get better at these tools linked from the main page.
If you are considering buying but not in a rush, check out humble bundle for Pyxel Edit. IIRC it was cheaper there.
Edit: added top part re art in the original post.