If you're first beginning to draw, don't draw hands hiding behind the character's back. It looks pretty uncomfortable and you should just draw the hands, even if it looks like crap because that's how you improve :>
Great advice! I personally used to do that ALL the time haha it was terrible >.<
There are a ton of great tutorials on deviant art, as well. I uploaded one below by kyorin featuring pixelated strawberries since I was making a strawberry patch QR code for my town recently ^_^
As for graphic art? My personal advice would be to
always use your layers! It makes it a lot easier to edit/adjust later on to your liking. Blending is very important, as well. Using shadows gives depth, as well as shine. Learn what all the different tools do on your program and play around with them.
As for fonts, there are thousands of free fonts at dafont.com. When picking a font, be wary of intricate fonts. They make look cool, but most of the time, it's best to use a simple, classy font so it doesn't distract from the main focus of your piece/clash with the background. When picking a font color, use the dropper tool and pick a shade in the art already to best compliment your work.
As for colors, stray from everything neon. You don't want to blind people with your work! Neon of course can look great when used with black for hints but usually try to pick colors that are soothing to the eyes. There are many times where I have personally thought my coloring was awesome but once reviewing it later I saw it was WAY too saturated and just too much! It's always good to get a second opinion and there are many graphic forums out there too, just for that.
Deviantart also has stock images and livejournal.com has a ton of textures. Textures are fun to use on the lighten or darken mode for great results. You may have to join the communities first, though. Most fan sites for celebrities have galleries with high-quality photo uploads. It's always best to use high quality photos! Nobody likes grainy images! If you do want to get rid of some graininess, however, using a smoothing/blending brush can help even it out.
You can also download brushes and such. Many different graphic designers create their own brushes that you can download. They can be found on deviant art, personal artist sites, livejournal, etc. Even if you google "Photoshop brushes" or "Paint Tool Sai brushes" you will have a zillion results.
Like I said, play around with the settings of different things. Change the opacity and adjust saturation. Use all sorts of layers and tools just so you can see the various outcomes. I'm sorry if this is confusing and one big ramble haha hope I could help! Thanks for making this thread! :3