Position of "Esc", "CapsLock", "Del" now seems OK.
"Backspace" must be in upper position. At current position of "Backspace" must be "+ =".
It is necessary to change the position of the Tab, now it is not very comfortable. I have no idea about best place, unless shrink "| \", a series of buttons from "Q" to "P" move bit to the right, and put "Tab" to the right, above "CapsLock".
Position of "~`" and " "' " little weird.
"Compressed" buttons "<,", ">.", "?/" and "{[", "}]", ":;" also not ok, but on other compact keyboards or compact devices its too inconvenient. Probably can be improved.
I'll show a variant of a better layout in my opinion in the edited image.