> Which software did you use to make graphics?
>
If you are looking for a good software check out gimp. I heard it's free and very good. I use CorelDraw. Just because i know some basic stuff about it. But for some reason many people hate this software... Honestly all this is a basic drawing. Most stuff is possible to create in construct2. Effects are very important! They really add a lot. Take a look how my game looked some time ago with and without effects:
I currently use Inkscape but I will also try Gimp. But I must thank you for mentioning effects...I will try to apply them in my first game. It looks fine without them, but it's possible that it will look better with a few effects.