This is part of my Mirabilia Mermaids of the Deep Blue Sea. I have changed the colors of the mermaids as you can see. I think it is really easy to do: change the colors from what it is called for and colors that you would like to do. First, you pull the floss colors that the pattern calls for. You line them up from the darkest to the lightest. Then you go to the DMC floss card and pick out the color family you want to use. The purple mermaid is from the 550 family. The blue mermaid is from the 156 family. You match them against the colors that it calls for and you put the new color number by the symbol in the chart. I also like to use overdyed floss for the hair. I don't like to change colors for the hair every stitch or two, so if I like the color of the hair then I look to find a overdyed floss that is close to those colors in the hair, I especially like the Needle Necessities. Or, if I don't like the color of the hair and I think another color would look better, I look through the overdyed floss that I have and choose from there. I also do not like to blend like alot of the patterns call for, like, take 1 strand of one color and one strand from another color and put them together. What I do is go back to my overdyed floss and pick a color that is close to those colors suggested. I also like to add beads to my work. More beads ususally then what is called for. I think it gives the pattern a better look. I like to go to bead stores and look for special beads that I think will look good on a pattern.