The Daisy Dress pattern is quite loose fitting around the waist and hips to allow it to slip on, as it has no zips, buttons or closures. This pink Daisy variation in a crisp cotton has sewn in ties and is custom fitted at the back.
TO SEW TIES
Cut 2 straight strips each measuring 75 x 8cm (30 x3"), fold in quarters ( so you won't have to turn them inside out!) and topstitch all around, tucking in short ends. Mark your waist level (make sure it's the same on both sides by measuring distance from bottom of armhole). Insert tie into side seam, sandwiching between front and back. (Unpick a small section if you've already stitched the sides.)
TO ALTER BACK
Crisp fabrics that don't drape well can make your Daisy dress look a little voluminous, particularly at the back. A quick alteration to reduce the back by 5cm (2") in width is to create a centre back seam. Fold dress carefully along centre back and stitch a 2.5 cm (1") seam in. (Check to see you can still get in and out of your dress first!) Trim seam back to 1 cm (3/8") seam allowance and zigzag/overlock to finish.
NB:If you'd like to reduce the back width but don't want a seam here (maybe your flowers look disjointed!) adjust the pattern piece before you cut out the back. Simply fold under 2.5cm (1") at centre back (long straight edge of the pattern piece) before you cut it out.
If you'd like to try these variations but are a bit confused, just let me know. I'll explain more fully and draw some diagrams for you!