I managed to do this in just less than 10 mins. I was in a rush, coz I'm on my way to my cousins 'leaving for uni' party now and I do RE after school as an extra GCSE.
So from when I got home, 16:45, till leaving time, 17:15, I had to get changed, talk to my bro about how his (primary school) head boy thing went, talk to mum about stuff, clear wooden board (what I use as my surface to do art on) and get the stuff to do it, and do the pic XD. By the time I sat down to do the card, I had just under 10 mins before going...

I managed this:

I have till Saturday to complete this.