Drawing cirrus clouds is a bit tricky because they don't have a perceptible shape. My advice here, don't outline them, don't color them completely white and follow the same direction to shape them, just like the wind does.
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Dibujar nubes cirros es un poco complicado ya que no tienen una forma definida. Mi consejo aquΓ, no las delinees, no las colorees completamente blancas y sigue la misma direcciΓ³n para darles forma, como lo hace el viento.