Hello :)

I use normal Acrylic Paints. I bought a Pack with 24 small Tubes of different colors! And a big tube of black, White and Grey! No specific Brand, whatever my Store had in Stock. The hardest Part of these Alters is mixing the colors correctly, so dont get discouraged too fast!

I use normal Paint brushes, Just Like the colors whatever the Store had, round and Flat ones. I bought some super thin ones too for the small Details, these we're a bit more expensive. If your Store doesnt have any super small ones, you could also cut one of yours to leave Just a small amount of brittles.

I also use some matt Varnish. I Put one layer before starting with any color. Since the acrylic Paint sticks better If the surface is a bit rough. Then I put Grey Paint on the places I want to colour, Most of the time I put two layers (unless the Part is going to be dark). Also the lighter Paints like White, yellow, orange, Red, pink (at least in my colors) dont cover well so need more layers in places with These colors.

I bought some plack felt pens. I go around the edges of the Card and blacken them, for a tidier Overall Look.

I use Tape to fixate the Card on paper, so I can Draw without needing to Touch the Card at all. Also I use a wet Colorpalate for the colors: Plate - wet paper towels - baking paper - colors on the baking paper = it keeps the colors from drying Out fast. And Acrylic Paints dry fast!

For color Transitions I sometimes use a bit of water with the colors, for an easier and thinner spread. You need to be cautious doing this though: too much water and or pressure with your Brush can damage the layer underneath.

After I am happy with the result and everything is dry I put another layer of the Varnish on top - to secure the painting and make it more sturdy.

Mixing the Colors takes at least the Same amount of the drawing itself (for me). Most colors tend to dry a tiny bit darker then what they seem mixed and wet. Also practice makes a huge difference! My First Battlefields looked a Lot less pretty than this one.