And I also don't think we have to do any more sliding (until step 9) - it's already in the right position for interpreting the dot in step 9 as the dot tile, and no other position would work for that.
You're getting damn close... A few misplaced lines, which I'm tempted to give some help on, since it falls into unverifyable territory, which I don't like in puzzles..
Yes, I know. The picture said "go through the diamond", so I went through the diamond. :P (I couldn't see any way to disambiguate which dot I should go through otherwise.)
As said previously, shapes are representative of faces... And it goes through the middle of the diamond... (I see now that logic is very much a failing of the puzzle)