I have no idea for drawing aqua...so..am just copy(redraw) the ori [link] but not edited from the ori pic into grayscale..it's real my handmade & finished with Photoshop n my mouse so sorry...
ops .. >.< sorry late.. ye it's i sketch with pencil but look so messy so i,edit n clean with photoshop.coloring in gray scale is so hard then fullcolor >.<..cos am so lazy..cos i just used mouse >.<. i have the ori sketch if mybe sometimes i'll uplouded.