Nice job, the confidence in your arrows and organic forms has definitely improved. Only thing I'd point out is that in arrow 3 the hatching is on the wrong sides of the ribbon, making it seem that your arrow is not in perspective but diverging (here's a concrete example of what I mean: https://imgur.com/uclExCh). You textures are mostly ok, but I will point out again that one of them, specifically the tulip, is not really a texture but a geometric component of the flower (you will see more on this point in lesson 3). Regarding your difficulty with texture I'd say don't be discouraged by unsatisfactory results. This may be an unfamiliar problem to you and there's no guarantee that we will be good at new problems from the get go (in fact, that's almost never the case). Don't worry if you make mistakes or you results don't look good to you, making mistakes is part of our learning experience and in the long run ends up actually enriching you. You should think about your mistakes the same spirit of this famous quote attributed to Edison: "I didn't fail 10000 times to create a lightbulb, I simply found 10000 ways it doesn't work". You will surely benefit from looking at external sources, but in the end I think it's all a matter of training your eye at identifying detail, and that will come with practice and careful study of what you are trying to reproduce. For this reason, you may want to try and slowly tackle the 25 texture challenge along with the main course work (if you do, don't try and complete it in one go, it's meant to be a companion content for the other lessons).

I will go on and mark your lesson as complete. Hope lesson 3 will be as enjoyable to you as it was to me. Good luck and good work!