You can use the one off my site if you like, everyone else probably will eventually anyway.
Or if you don't use that then my advice for a proper mockup would be to color pick the 2 and draw the 1 with a 1 pixel brush, because as the 1 is now it's too fat and shouldn't have that curly serif font. Also the red circle is too big. If you didn't notice they get bigger with each installment lol, DS Chuu 1 being the smallest and by the size of the red circle it's obvious you used the DS Chuu 2 box to make this one.
Cut out the top of the flower, use magic wand on the red spots, color pick the background of the box and go over the spot you cut out with a brush. Use the color picker on the circle and draw a new circle fill, make it a bit smaller and position it correctly on a layer above the box. Use the brush to go over the old circle with the bg color. Put the top of the flower you cut out on a layer above the new circle and hey presto, you will have a boxart that no one could tell at first glance is a hacked one.
At least thats what i done anyway lmao.