Design three pixel art tilesets: tree leaves, tree trunks and parallax background leaves

I need pixel art tilesets for a maze based game. Two sets for foreground "walls" and another for a parallax background. See "[login to view URL]". Set 1 of tiles must: 1: Be 16x16 pixels each. 2: Allow the foreground leaves of the tree to be built. 3: Each fill up most of the 16x16 squares, except in the case of the diagonals (which take up half). Transparent pixels should only be near the edges, to a depth of no more than 2px. 4: Join up seamlessly to other tiles to make a leaf pattern. 5: Use a relatively low colour palette in order to emphasise the pixel nature of the art. 6: Stand out from the background using colour, saturation and (thin) outlines. 7: Use a green palette. 8: Use no altialiasing. I will leave exact colour choices to you. If you look at "[login to view URL]" you will see an example of the kind of leaves I'd like to see. If you look at "[login to view URL]" you will see my attempt, and you'll see why I need some help. Set 2 of tiles must: 1: Be 16x16 pixels each. 2: Allow the foreground trunks of the tree to be built. 3: Each fill up most of the 16x16 squares, except in the case of the diagonals (which take up half). Transparent pixels should only be near the edges, to a depth of no more than 2px. 4: Join up seamlessly to other tiles to make trunks and branches. 5: Use a relatively low colour palette in order to emphasise the pixel nature of the art. 6: Stand out from the background using colour, saturation and (thin) outlines. 7: Use a brown or brown/grey palette. 8: Use no altialiasing. [login to view URL] contains an example of some trunk work, but I need something more solid and "foreground" rather than thin and faded out as in the image. Set 3 of tiles must: 1: Be 64x64 pixels each, or larger. 2: Allow me to build parallax layers of background leaves. 3: Use a more limited palette than the foreground tiles. 4: Not interfere visually with the foreground. 5: If antialiasing is to be used, use translucent pixels. In "[login to view URL]" you can see an example of background leaves. Something along those lines would be good. Ideally I would like the work to be delivered as layered Photoshop files (or Pyxel files if you use that software.) I will accept PNG files as long as transparency is preserved and background and foreground sets are separated into different files. The ideal freelancer for this task will be able to show examples of previous pixel art work.