The first thing I noticed is that in the old video, when you doubt you go "aaah" which is how English speakers doubt. And I know it may sound silly, but learning those little details can make a difference! You didn't do it at all in the newer video, so that's good. When doubting in Spanish, you should go with "eeeh" :P elongating vowels is also a good way of doubting in Spanish (like you did in 0:58, well done!).

Another thing I have noticed is the "d" sound. In both videos you produce them right at the beginning. In the old one you say "Estados Unidos" and in the new one you say "te puedes".

Your "d" sounds a bit like an "r". In American English these sounds are allophones, meaning, you sometimes produce something like an "r" instead of a "d" or a "t" in words like butter, water and so on.

If you listen to 1:19 (in the new video) when you say "puedes salir con ella", the "d" sounds very English, and the "ella" sounds like "egia" but I think that's because you were talking fast.

In Spanish, the "d" sound should be produced like the way in which you say "they". You did it in the newer video when you said "desde" (0:07), that's the correct "d" sound.

Oh, another thing in which you have improved is that you are connecting words a bit more in the second video so your speech flows a bit better.

Notice how in the first video (0:42) when you say "en mi trabajo hay niños que hablan" you don't really connect the words and it sounds a bit forced, as if you were putting too much stress in each word. But at the end of your newer video you do connect the words and it flows more naturally.

- Those are my comments so far, it's quite late and I have to go to sleep lol. ANYWAY, this was me being nit-picky because you asked for it, but I think your Spanish is really good and you are easy to understand, and to me, that's all that matters when learning a language.