well this didn't take me 90 minutes, but it's the begining of an exercise. i'm going to spend 90 minutes on sketchs/designs from pencil to ink, and whatever it is after time expires, i'm done and i move on to the next sketch. this however is about 20 minutes into the process. so i've got 70 minutes left to put into it. i would have done it in one setting, but it's rather difficult when you have " what cha doin daddy?..." every 5 minutes. and BTW i couldn't scan the whole thing in so when i finish it, it'll be a lot bigger.