"Dual L" Cover Design@Smoke Stings Studio

I developed "white & black L" and all the letters except "L" (dual L) is not used on this design. So this is smple.
I used the same design on the backcover (the image is turned over)..
But I suppose someone would take upside for downside, so I put the word "English" on the first page and could be seen through on the cover.