1) i can tell what that text says, oh, easy - change the text - that deosnt work - makes it sound as if it was easy to do which is bad
2) you should make part of the render visislbe and have brushing where it isnt
3)i think people understand that its "supposed to be plain"
4) its too purple

but its quite good for your frst, the render was done in bryce im guessing, amybe lower the opacity of the scanlines