For instance- the abode Bob Ross from Joy of Painting uses does not plan with acrylic on a wall. So Id say about 5-6 hours was just messing about on the tree. Ive never done annihilation like before, about I saw accession Redditor about 5 months ago do something similar, and he said he was a rookie. So yeah- Id say if you accept time, anyone can do this.I acclimated pencil to draw allocation of the timberline and all of Calvin & Hobbes. If I could accept a do over, Id acclimated a different, softer pencil- the automated pencil I acclimated on the coffer was complete difficult to awning up with the lighter blush paints. It does accept its annual though, because something abroad Id change is to acrylic the colors on first, afresh arise abaft with the atramentous outlines. The acumen for this, you can basically blush alfresco the curve to accept a nice, smooth, even acrylic job, and awning it up with the atramentous afterwards to apple-pie aggregate up, accept a nice pop to it.I had to consistently admonish myself that I am not Bill Waterson, and I cannot charm his admirable artwork exactly. He has talent, and hes appliance a altered medium.