meh...if I can play a game in another language that I don't know... don't let it stop you from trying.
Your sigs are okay, but you could really use some photoshop skill. Maybe looking for tutorials in french might be a good idea. Interesting enough your sigs aren't bad enough to be called noobish (or shit) yet they aren't good enough to be called pro. For the most part they're not an eye strain and have minimal, if anything, errors to fix up.
Don't forget not everyone will like the style you choose. If you're afraid of other peoples' opinions then don't even bother.
(I'm trying a new way to critique peoples' sigs, remember my thoughts are opinionated, you take what you think is important to your understanding)
1st sig
-Good choice for the background
-The text is a little hard to read, but it's revisable (text is the hardest part in a sig)
-The rest of it's a bit lame (render doesn't work so well with the colors, symbols and weapon in the background are a bit odd, and the rouge icon looks very out of place)
2nd sig
-I actually like the color balance in this one (a little off, but it's not terrible)
-Too many renders in this; usually you want to focus on one specific thing. I see what you were trying to do with the triforce (duplicated the layer and moved it around), yet you should try more layer blends.
-Text needs a border and a color change (or a color blend).
ooo nice third sig.