leave the concrete about 2" thick and just use your hands to make them the shape that you want, if they are to runny to shape just let them sit a few more minutes and them come back and do the shape work, if you need more concrete for a stone just throw it on, or just remove any extra and toss it on the next stone. as a result an excitement will be created in him towards prayer. if you can find a way to make workout enjoyable, you are certain to be much more effective within your experience to lose excess weight. 