Mr Ploos. . . if your screen is too big, step back away from it, lad. The closer yer nose is to tha screen, the bigger the image appears, oh aye. And fewer moon rivers may be in order.
Seriously tho, no tellin' what ye mean. Boot, I think ye may try rebooting yer computer as one option because the computer can get crossed up on its own sometimes and rebootin' reminds it what it should be doin'.
The other possibility is that ye could try repeatedly pressing on your keyboard the Control Key + the Minus Key (for the PC) until it's the right size -- if that's the problem.
The other possibility is that your monitor resolution might have changed from the correct one somehow when you were diddlin' aroond on some other errand.
But if you haven't done anything to make it look super large, then a reboot might be in order.
Hope it helps lad.
Nice paintin o' tha blonde. Looks like you could go into those areas you have outlined and muck it up a bit with texture in those areas for interest.
"Not a bit is wasted and the best is yet to come. . ." -- remembered from a dream