[Spark910]

Well from what I can see your new to levels, or just not good at it! Im going to take it your new. Okay well first off, nice try. You have used some none already build parts, which is good as ever new person should explore the tileset as there is alot on there.

First problem with all of the levels is the floor. Its too plain. You have one color throughout which doesn't meet with todays standards. You need to have a combination of more than one set of tiles to make an intresting floor.

Second problem I think is the walls, these can look good when you do thin walls with it and not big thick bits as it looks ugly like that, for what im on about look on screenshot in Red Box. See how it generally looks neater when its thin?

Third problem is some tiles you have used dont mix at all. For instance the wall behind the besk type thing. I looks interesting but not too nice, maybe house wall, book shelf etc...

Last big problem is blankness, find things to put in there.

Keep going with it, for now just try and make one level good. Then you can work on them all.