Think of relaxed office rather than too casual.
like this
or this
I love these as well, if the blue not for you, the grey is more neutral
blue
For skirts-this looks to be a reasonable copy of the asos ruffle hem of the moment for half the price
skirt
Though, like pencil skirts, it depends how comfy you are with a fitted skirt. (They do have a choice of pencils that's could form a good base)
This is a classic that's a bit more forgiving
fit flare
These could work with jumpers, shirts/blouses and t shirts to vary the look
For dresses:
Classic work dresses
here
here
or here
I love this
relaxed, could dress up or down
I have these in wine and wear them a lot for work with cigarette pants
brogues
or these
these are delish for spring!!
Not to everyone's taste but these would jazz up the plainer trousers
leopard
or these
Plus a pair of classic courts for smarter days
Then spend the rest on simple classics - t shirts, shirts etc. not sure of the value of the scarves that you chose- to me they are more outerwear-maybe a statesman necklace or 2- not necessarily from here