DTD has always been a bit of a baby elephant (despite being small and slight and 9-25 centile all her life).
She probably only really learnt to run at about 3, jumping on the spot/into a puddle, again only recently at 3.4 or so.
She took quite some time to master her scooter and is still significantly less able on it than her twin brother. That just seemed like natural differences between different children. We probably wouldn't notice if they were 1.5-2yeara apart.
But she has days when she is REALLY clumsy/uncoordinated. Today she ran into a fence at her sports class, fell over numerous times just playing on grass. She can literally fall over standing still if she twists around too fast.
When is this something to worry about? I feel now and against gets close to being something more than just preschooler over excitement.
Things she can do - dribble a football, is progressing well at swimming lessons, can climb a decent sized climbing frame, up rope ladders, can walk up a slide etc.