Trials and tribulations of Filet Crochet

Well its been a long time since i have done anything here. I have recently entered the world of filet crochet. Filet crochet is when you follow a graph to make a picture and or words. you can make all sorts pf lace edgings, table cloths, bedspreads, cafe curtains, valances, pillows ect ect the list goes on and on. Simple technique, so they say. Basically chain stitches and double crochet. Well I have a book on it and several other books that talk about it but not one tells you the multiple of it! ahhhh, After searching the internet in several places finally figured it all out. sheech what is the big deal of adding the multiple so you can make your own designs. Well the multiple is 3 + 3 for a closed 1st block + 7 for an open 1st block for 4 dc blocks. There are two techniques for this type of crochet, there is also 3 dc blocks but I have not tried this yet. So far I have completed a mushroom valance. I will post pictures later on. now I have made my own design of shamrocks in a group to make another valance for my country place. I bought it last year and now I want to decorate it all up, painting and such. its just a summer place not to go to all year round. I'm in Canada so the winters can be hard at times . I wanted to sew valances but I can't seem to find any fabric. What we don't sew here in Canada ??? The walmarts here took out their fabric dept. . Ok so I just looked at my finished valance and to my horror have discovered a mistake. I MADE the huge mistake of changing my hook at the end of the project and the mushroom is smaller than the rest ahhh. oh well I REFUSE to take it apart its been washed and blocked and its just going in a bathroom window anyway a very small bathroom. So I learned something never change hooks when doing this sorta work. I should also mention that I used 10 size crochet cotton and a size 2 steel hook. when I used the other hook it was a 1.75mm and it looked the same size but it was not the same size at all. oh well live and learn huh?