Spent an hour last night cutting out the flowers then spent an hour this morning sewing some on.
I glue the pieces on with 505 temporary spray basting glue. I set up the pieces wrong side up on a sheet of tissue then spray gently from about 30cm away. The first time I tried this for the house parts I sprayed gently but was a bit close and the pieces flew away.
I used the same piece of tissue paper. Just pulled it gently apart where I had folded the sticky part in from last time and placed the pieces on. It wasn't sticky enough to be a problem.