I am a new knitter-hubs and I both learned over the holidays. I am trying my first non-scarf/hat project. A laptop bag with cables galore

I know that I am going to have to block it eventually and this is where my question comes in. I am doing this initial run in an acrylic yarn-if i mess up-no economic URGHS. Does acrylic block?
Second tie in question-i want to make another one using the cotton ease by lion brand (love the colors), does anyone know how that will work or have suggestions?
Thank you so much for your help!