I've made drapes for decorators here in Phoenix. They really are very easy to make, even lined ones. First of all the price for that material is excellent unless it's a very inferior material. I would insert the colors at an angle not straight across the width of the fabric. Makes the drape much more interesting and prevents the seams from making imprints. I wouldn't serge the seams but I would press them open. Weights in the hem are essential if you want a professional look. You can use weights which are quite inconspicuous or chains depending on how substantial the material is. It's also very easy to line drapes. Cut the lining material three inches narrower than the drapes are going to be, use a half inch seam allowance and when you press them the width of the curtain versus the lining will automatically accomplish the one inch hem allowance you want on the sides. I always make a double four inch hem on the bottom as it also adds weight to the drape. I don't know what you want to do with the top. Good luck. You'll do fine. Jan