Rock Lee blushing/ Rock Lee sonrojando

New here. This my first drawing here. Maybe would've added color if I knew how to change the opacity of the brushed and knew the tools better. I also don't know how to zoom in or out on the canvas. I use laptop and I tried pinching to zoom, but since my laptop is old that doesn't work. Don't really know how things work here yet, but I'll get the hang of it. Also is karma used as currency in here? Like to get access for some canvases? / Hola, soy neuva aqui. Habria ponido color en el dibujo, pero todavia no se como usar los herramientas. Follow me on instagram/Sigue en Instagram --> @electric0.crimson_cherrycola