- Shoelaces tied can be a suggestion that you feel 'in control', and the use of shoes can be an indication of how supported you feel.
- Black can often suggest the unknown.
- The fact that you were putting them on (instead of them already being on) with the laces tied could suggest that that you're not sure of some situation you're getting ready to begin, but you feel supported by at least 1 person, and you feel 'in control' of the situation despite not knowing exactly how it's going to play out.
Of course we know that black AF1s are iconic so it could also just be that you were getting ready to step out and crush it your black AF1s. Simple.