Your lines could have been even more straight and i like your tissue box drawing it is nice.
Your lines are not that perfect there is still room for improvement....... XD
You could have drawn the isometric boxes better but I still like your tissue box!
Work on your isometric boxes and parallel lines. It will help you in your drawing better (:
Your line-works are pretty much better than mine but there is always room for improvement especially for the cylinder.
oh wow...ur isometric boxes are like mine, nevertheless, u can improve on them. gd wrk!