Random Practice

I had initially wanted to practice on textures so I can have more varied backgrounds, but ended up a bit...sidetracked
1) I wanted to try drawing bubbles, and that was the first thing I did. I searched for tutorials on dA and found a simple bubble-drawing tutorial: [link] ...didn't follow the tutorial after the 2nd step though LOL
2) Then I wanted to try painting...wood texture. I made my own wood pattern ...didn't look at any tutorials for this. I thought wood only was too plain, so I added a cup of steaming hot coffee on it
3) This one's...random because I didn't know what to draw.
4) Yesterday I drew a certain guy in jeans, and I wondered how to colour jeans. I searched on dA but the jeans tutorials that I found weren't exactly what I was looking for, so I tried on my own to make the jeans texture D:
5) Not meant to be realistic, it's just there to fill the 2nd last blank slot.
6) I have no more ideas, so I let my hand move and doodle something to fill the last slot

So basically, other than (partially) the bubbles in the first rectangle slot, the other stuffs are done by trial-and-error.