Notice that I added a triangle piece of fabric with a tiny fairy printed on it next to section 2. She's walking on a single strand of white rayon thread. the fabric was hand sewn in place on top of the section 3 green fabric. This is optional if you don't have any fabric with something you would like here.
To do the hydrangeas use a button or coin in the sizes you want the flowers to be to draw circles. Mine range from 3/4" down to 3/8". Fill in the circles making the french knots with 3-4 strands of DMC white floss. You don't want the knots to be identical so do 2-4 wraps with a variety of floss strands. The leaves are straight stitched using 3 strands of DMC 3013. I free hand drew the leaves where I thought they'd be best. I would have preferred using 2 similar shades of green but once I started with this one I found I didn't have one that would work with the fabric. As I worked around the flowers I also used the green to add some knots to them.
The roses are made using bullion stitch with lots of french knots along couched branches. First I used 2 strands of DMC 895 to couch 2 strands of the same color along the seam lines, then added branches to fill in above the hydrangeas. I think bullions are easiest made with the threads I use when tatting so I used Lizbeth size 10 124 spring green for the roses and knots. I've had floss leave loops when making bullions. When I know I'm going to make a lot I'll get out my size 10 and 20 threads. I cut piece os the thread so I'd be able to have the pink with a little green and pieces of just the greens. Some of the roses are all pinks while some have a few green bullions. DMC does make a pink/green floss, it's Coloris 4500. There's one that's shades of pink to cranberry and light browns, Coloris 4504. If you've had enough making french knots substitute lazy daisy leaves. I'll be adding some using DMC 3364 now that I've thought of it. Seed beads will be added later.
BTW, I stapled this section to a small wood frame to embroider so I wouldn't crush section 2 flowers.