I "RECKON" THAT YOUR ENGLISH IS GOING TO GET BETTER!
The verb "reckon" is used very commonly by native English speakers but much less by people who are learning English as a foreign language. The standard verb to use in this context is "think" but it is important that you are aware (ser consciente) of this alternative. It can be used in both formal and informal contexts and generally implies a certain amount of estimation about the future.
If you use "reckon" then essentially you are often making an educated guess about what you think will happen in the future. I "reckon" your English will improve if you read my posts everyday!
Hope that helps!
Soy el director de Daniel Smith + Partners. Tengo más de 10 años de experiencia enseñando inglés a españoles.