What eyeshadow can i mix to make a different color ?

Instead of mixing loose powder (which can get really messy really fast, trust me), try layering colors directly on your lid. When in doubt, layer it on a sheet of paper first, then hold it up to your face to determine whether it will work or not. For example, I have brown eyes, so when I want a change from my standard eyeliner, I just use a navy liner with a silver/navy shadow and sometimes plum shadow in the crease with black mascara. Or you could try a green/bronze/orange combo for a warmer look. The basic concept is this: Medium neutral shade (neither warm nor cool) all over the lid, darker shade in the crease for contour, lighter shade near the browbone for highlights (plain shimmer works as well, as long as it's subtle). Liners and mascaras come in great colors now too, so just experiment to see what you like. Blessed Be