You can put what you're the best at in gfx, in team work etc. for strengths
For weakness it can be about thing you think you need to work more on or where you think you're lack
But if you can't think of anything you don't have to put any, it's a great indicator for us though
thanks for the reply and also, few more questions. what size should the banners be for the game one (or is it the same size as for the sliders?) and are the sizes in inches or pixels for all challenges?