sounds like a usual first flight...(although some bounce on landing, quite hard in fact). Congrats! It maybe slightly too rich, but it helps to pull the engine off, open it up,(change the plug while you are at it), clean the with rubbing alcohol, and replace the fuel lines(keep the old ones just in case). Swish around some alcohol in the fuel tank and dump it out, letting it fully dry then reassemble and go for an engine test..if this doesn't solve it..let us know..