To make so beautiful Amstrad CPC loading screens like Eric Cubizolle (Titan), it's easy, you just need to use the same painting program : Multipaint by Tero Heikkinen AKA Dr. Terrorz, and maybe a bit of talent and mostly a lot of work.

Titan is describing Multipaint as a mmix of OCP Art Studio and Deluxe Paint for windows which offers the possibility of using the resolutions and palettes of a whole bunch of old computers including the Amstrad CPC (mode 0 and 1, overscan possible in mode 0).

Two videos presenting Multipaint (beware they are both from four years ago, so not about the latest version and features) :

• discovering Multipaint, a photoshop to draw 8bit screens (video in 2019 in french)
• presentation video by the author himself during a demo party : ZOOParty 2019 (see below)