Looking at the flag of Alberta, my first plan was to enlarge the landscape on the shield, but I saw that lizard-socks had already done that (although I would draw the hills a little bit differently). I then considered combining that idea with the floral symbol of the state, the wild rose, similar to the one Mario and others had made, but slightly more abstract. I took the pink color from a photograph of a wild rose. I thought six anthers would suffice to symbolize "many", and ended up with this proposal.
The fact that there is a Union Jack and crown depicted on it. Sure, it's called "British", but the days of colonialism are over, and a provincial flag should express something about the province, not about the country of which it has been a dependency.
The awkward mixing of a wave pattern with the overly detailed rays of the sun, which creates a visual mess.
So, I eliminated the sun and the Union Jack, and instead placed a picture of pacific dogwood, the official flower of British Columbia, in the center of the flag.
I added two alternative versions, with an extra colour, on request.
I made a few tweaks to the flag of New Brunswick. Instead of stretching the lion beyond recognition, it is doubled, and it keeps the blue nails and tongue that it has on the shield. Also, the proportions are changed from 16:10 to 3:2.
Nova Scotia's blue-on-white saltire doesn't really need any shields or symbols attached to it - in itself it is a strong enough reference to Scotland. But if I had to put anything on it, it would be the mayflower, the official flower of Nova Scotia since 1901.
In these designs for the flag of Ontario I combine the branch of maple leafs from the shield on the current flag with the logo of the province. Proposals 1-3 use the 2006 logo, while proposals 4-6 use the 2019 logo.
On the flag of Prince Edward Island, the red and white border (that messes up any design with a red and white background) is replaced by a golden border. The three oak saplings from the old flag have matured, and so three acorns represent them - while the old oak tree has disappeared from the picture.
The second version features the heraldically equal but much more stylized lion from the shield of New Brunswick, which gives it a more modern look.