Reddit mentions of uxcell a11120600ux0205 Anti-Static Flat Tip Tweezers Electronic Repair Tool (2 Piece)

A few tips to help you out OP:

1. Thin your paint. Generally, 50/50 is good starting point. For future note, buy paint brush cleaner and thinner at your local hardware store. Far cheaper and generally works fine.
   
   
2. You should get an Xacto knife and a flush side cutter like this. Use the flush cutters to get the parts off the spruce, and use the Xacto knife to clean it up. The box cutters you have don't give good control and unergonomic for most modeling work.
   
   
3. If you have a Michele's close by, get their general purpose assortment paintbrush pack. This gives you the flat brushes and quite a bunch of other brushes. The flat brushes are ideal for applying primer/base coat.
   
   
4. Go to your hardware store or automotive store and get an assortment pack of sandpaper.
   
   
5. The kit directions aren't always the way to go. When doing tanks/armor and most kits in general, I recommend following a modular approach. So for tanks, paint your road wheels, hull, etc before gluing it together. This makes it a hell of a lot easier to paint.
   
   
6. You should definitely buy some filler. You'll need it to fill larger gaps the glue won't be able to deal with.
   
   edit:
   
   A few other useful items you should get either now or later, most of this you should have around the house already:
   
   

• A fine point tweezers. Something like this: http://www.amazon.com/Anti-Static-Flat-Tweezers-Electronic-Repair/dp/B00880EDIO/
  
  
• Toothpicks
  
  
• Cotton swabs
  
  
• Compressed air can
  
  
• If you don't have good light in where ever you setup to work, get a good desk lamp
  
  
• A cutting mat like this: http://www.amazon.com/Alvin-Professional-Cutting-Green-Black/dp/B0015AOIYI/